CN215762480U - Online washing unit of boiler high pressure feed pump filter screen - Google Patents
Online washing unit of boiler high pressure feed pump filter screen Download PDFInfo
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- CN215762480U CN215762480U CN202122099388.3U CN202122099388U CN215762480U CN 215762480 U CN215762480 U CN 215762480U CN 202122099388 U CN202122099388 U CN 202122099388U CN 215762480 U CN215762480 U CN 215762480U
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- steel pipe
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Abstract
The utility model discloses an online washing device for a filter screen of a high-pressure feed pump of a boiler, which comprises a pipe section main body, wherein an inlet stop door is arranged at the upper part of the pipe section main body, the lower part of the pipe section main body is connected with a pump body, a mounting flange is welded at the left side of the pipe section main body, the left side of the mounting flange is fixedly connected with a flange plate through bolts, a discharge steel pipe is fixedly connected at the outer side of the flange plate, two flat steels are welded at the inner end of the flange plate in parallel, a filter element is arranged in the flange plate, one end of the filter element close to the flange plate is pressed by the two flat steels, the other end of the filter element is inserted into a groove arranged at the water inlet end of the pipe section main body, a medium enters the filter element and flows out through filtration, two discharge valves are arranged at one end of the discharge steel pipe far away from the flange plate and are led into a trench, the filter screen can be washed during the operation of the feed pump without stopping the feed pump and taking safety measures before the maintenance, the filter screen is cleaned and is forced to exit from a deaerator to be heated, the deoxidization effect and the thermal efficiency of the deaerator are improved.
Description
Technical Field
The utility model relates to the technical field of feed pump filter screens, in particular to an online washing device for a high-pressure feed pump filter screen of a boiler.
Background
A multi-stage centrifugal high-pressure water-feeding pump is characterized in that an inlet and an outlet pipeline of the water-feeding pump are connected in a header pipe connection mode, an inlet pipeline is connected with a high-pressure deaerator, an outlet pipeline is connected with a boiler water-feeding platform, the rated water-feeding pressure is 14.5Mpa, the rated medium temperature is 158 ℃ and the rated medium inlet pressure is 0.58Mpa, a pump body medium inlet pipe section is provided with a manual stop gate, a cylinder-type filter screen is arranged between the inlet stop gate and the pump body inlet pipeline, one end of the filter screen is inserted into a water inlet end face groove, a medium enters the filter screen and flows out of the filter screen through filtering, the other end of the filter screen is blocked by a flange gland, the water-feeding pump is stopped when the filter screen is cleaned, the inlet and the outlet valve of the water-feeding pump are closed, the flange gland of the filter screen is opened, and the filter screen is taken out for washing.
At present, the technical scheme has the following defects:
1. when the system has more impurities, the filter screen of the water feeding pump is frequently blocked, the cleaning steps are complicated, the workload of workers is increased, the online cleaning cannot be performed, the cleaning operation can be performed after the operation of the equipment is stopped, and the energy consumption for frequently starting and stopping the equipment is increased;
2. because the inlet pipeline and the outlet pipeline of the feed pump are connected by a main pipe, when the inlet valve or the outlet valve of the feed pump leaks, the medium pressure and the temperature in the pump body are too high, and the safety measure for cleaning the filter screen cannot be realized, so that the filter screen at the inlet of the feed pump cannot be put into use after being blocked, and the stable operation of the whole set of production system is influenced;
3. the cavitation erosion of the impeller of the pump body is aggravated due to untimely cleaning after the filter screen is blocked, and the service life of the water supply pump is shortened.
For this reason, an online washing device for a filter screen of a high-pressure feed pump of a boiler is provided to solve the problems.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved
Aiming at the problems in the prior art, the utility model aims to provide the on-line washing device for the filter screen of the high-pressure water-feeding pump of the boiler, which can realize the washing of the filter screen during the operation of the water-feeding pump without stopping the operation of the water-feeding pump and taking safety measures before maintenance, the filter screen is not cleaned and is forced to withdraw from a deaerator for heating due to the fact that the filter screen leaks in an inlet valve and an outlet valve and cannot be isolated for maintenance, and the deaerator is improved in deaerating effect and heat efficiency.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
The utility model provides an online washing unit of boiler high pressure feed pump filter screen, includes the pipeline section main part, the pipeline section main part upper portion installation entry stop gate and the sub-unit connection pump body, the left side welding of pipeline section main part has mounting flange, bolt fixedly connected with ring flange is passed through in mounting flange's left side, the outside fixedly connected with of ring flange discharges the steel pipe, the inner parallel weld of ring flange has two band steels, the internally mounted of ring flange has the filter core, just the filter core is close to the one end of ring flange is by two the band steel compresses tightly, the other end of filter core inserts groove department and the medium that pipeline section main part inlet end set up get into through filtering outflow in the filter core, the one end that discharges the steel pipe and keep away from the ring flange is provided with two blow-down valves and causes in the trench.
As a further scheme of the utility model: the width of the two flat steels is 10 mm.
As a further scheme of the utility model: the size of one end of the discharge steel pipe connected with the flange is the same as that of the flange, and the discharge steel pipe is a 20G steel pipe material component.
As a further scheme of the utility model: the long 400mm that is of discharge steel pipe, just discharge steel pipe and adopt big small end reducing pipe to shrink to DN 50's pipe fitting, two in the one end bottom that the ring flange was kept away from to the steel pipe discharge valve is DN 50's ball valve.
3. Advantageous effects
Compared with the prior art, the utility model has the advantages that:
the scheme is characterized in that a universal flange gland on the left side of a pipe section main body is replaced by a flange plate with the same size, two flat steels are welded at the inner end of the flange plate in parallel, one end of a filter element is inserted into a groove on the end face of a water inlet of the pipe section main body, one end of a filter screen is inserted into the groove to completely cover an inlet, water entering from the inlet can be completely filtered through the filter screen, the other end of the filter element is tightly pressed by the flat steels, the outer end of the flange plate is connected with a discharge steel pipe which is provided with two discharge valves, one end of the discharge steel pipe, far away from the flange plate, is led into a trench, and when the device is operated, a medium enters the inner surface of the filter element and flows out through the filter screen, the accessible discharge valve is opened and is discharged the inside impurity of filter core, can realize washing the filter screen in the operation, need not to stop the fortune and take the safeguard measure before overhauing, and the filter core washs and no longer receives to leak in the income, the outlet valve can't keep apart to overhaul and forced to withdraw from the oxygen-eliminating device heating, has improved oxygen-eliminating device deoxidization effect and thermal efficiency.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the connection between the flat steel and the flange plate according to the present invention.
The reference numbers in the figures illustrate:
1. a pipe section body; 2. installing a flange; 3. a flange plate; 4. discharging the steel pipe; 5. flat steel; 6. a filter element; 7. and a discharge valve.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Further, the width of the two flat steels 5 is 10 mm.
Furthermore, the size of the end of the discharge steel pipe 4 connected with the flange 3 is the same as that of the flange 3, and the discharge steel pipe 4 is a 20G steel pipe material member.
Further, the length of the discharge steel pipe 4 is 400mm, the bottom of one end, far away from the flange plate 3, of the discharge steel pipe 4 is a pipe fitting contracted to DN50 by a reducer pipe, and the two discharge valves 7 are ball valves of DN 50.
The working principle is as follows: when the utility model is used, a universal flange gland on the left side of a pipe section main body 1 is replaced by a flange plate 3 with the same size, two flat steels 5 with the width of 10mm and the thickness suitable for compressing a filter element 6 are welded at the inner end of the flange plate 3 in parallel, one end of the filter element 6 is inserted into a groove arranged at the water inlet end of the pipe section 1, the other end of the filter element 6 is compressed by the flat steels 5, one end of a filter screen 6 is inserted into the groove to completely cover an inlet, water entering the inlet section can be completely filtered by the filter screen 6, a discharge steel pipe 4 with the same size and 20G steel pipe is welded at the outer end of the flange plate 3, a pipe fitting with a reducer of a large end and a small end contracted to DN50 is adopted at the bottom of the discharge steel pipe 4 with the length of 400mm, two discharge valves 7 are arranged, one end of the discharge steel pipe 4 far away from the flange plate 3 is led into a trench, when the operation, a medium enters the filter screen and can be discharged through the opening of the discharge valve 7, impurities in the filter element 6 can be discharged, the filter screen is washed in the realization operation, need not to stop the fortune and take the safeguard measure before overhauing, and filter core 6 washs and no longer receives leaking in advance, the export valve can't keep apart the maintenance and forced to withdraw from the oxygen-eliminating device heating, has improved oxygen-eliminating device deoxidization effect and thermal efficiency.
In the case of the example 2, the following examples are given,
the rest of the process is the same as that of the example 1,
in this embodiment, when cleaning up filter core 6, must observe the oxygen-eliminating device internal pressure, when the pressure is the negative number strictly open the washing door to air admission pipeline of pipeline section main part 1 entry makes pipeline section main part 1 take place the cavitation.
In the case of the example 3, the following examples are given,
the rest of the process is the same as that of the example 1,
in the embodiment, if no effect exists during online cleaning of the filter element 6 in operation, the inlet stop door of the pipe section main body 1 can be closed, the outlet door of the pipe section main body 1 is slightly opened, back washing is carried out by means of high pressure of the outlet of the pipe section main body 1, the flange plate 3 does not need to be opened, and the influence of unsafe factors that safety measures cannot be executed due to internal leakage of the valve is avoided.
The foregoing is only a preferred embodiment of the present invention; the scope of the utility model is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (4)
1. The utility model provides an online washing unit of boiler high pressure feed pump filter screen, includes pipeline section main part (1), its characterized in that: an inlet stop gate is arranged at the upper part of the pipe section main body (1), the lower part of the pipe section main body is connected with a pump body, a mounting flange (2) is welded at the left side of the pipe section main body (1), the left side of the mounting flange (2) is fixedly connected with a flange plate (3) through a bolt, the outer side of the flange plate (3) is fixedly connected with a discharge steel pipe (4), the inner end of the flange plate (3) is welded with two flat steels (5) in parallel, a filter element (6) is arranged in the flange plate (3), and one end of the filter element (6) close to the flange plate (3) is pressed by two flat steels (5), the other end of the filter element (6) is inserted into a groove arranged at the water inlet end of the pipe section main body (1) and the medium enters the filter element (6) and flows out after filtration, and one end of the discharge steel pipe (4) far away from the flange plate (3) is provided with two discharge valves (7) and is led into the trench.
2. The on-line washing device for the filter screen of the high-pressure feed water pump of the boiler according to claim 1, characterized in that: the width of the two flat steels (5) is 10 mm.
3. The on-line washing device for the filter screen of the high-pressure feed water pump of the boiler according to claim 1, characterized in that: the size of one end of the discharge steel pipe (4) connected with the flange plate (3) is the same as that of the flange plate (3), and the discharge steel pipe (4) is a 20G steel pipe material component.
4. The on-line washing device for the filter screen of the high-pressure feed water pump of the boiler according to claim 1, characterized in that: it is 400mm to discharge steel pipe (4) length, just discharge steel pipe (4) and keep away from the one end bottom of ring flange (3) and adopt big small head reducer pipe to contract to DN 50's pipe fitting, two discharge valve (7) are DN 50's ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122099388.3U CN215762480U (en) | 2021-09-01 | 2021-09-01 | Online washing unit of boiler high pressure feed pump filter screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122099388.3U CN215762480U (en) | 2021-09-01 | 2021-09-01 | Online washing unit of boiler high pressure feed pump filter screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215762480U true CN215762480U (en) | 2022-02-08 |
Family
ID=80081569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122099388.3U Active CN215762480U (en) | 2021-09-01 | 2021-09-01 | Online washing unit of boiler high pressure feed pump filter screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215762480U (en) |
-
2021
- 2021-09-01 CN CN202122099388.3U patent/CN215762480U/en active Active
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