Self-cleaning system of compressor cooling water route
阅读说明：本技术 压缩机冷却水路自洁系统 (Self-cleaning system of compressor cooling water route ) 是由 岑焕军 金国锋 于 2019-11-05 设计创作，主要内容包括：本发明涉及一种压缩机冷却水路自洁系统,包括冷却器,冷却器上设有冷却器进水口与冷却器出水口,正常工作状态下,通过控制阀的开关控制,介质自外部入水口进入并经第一管口进入冷却器进水口,在冷却器循环后,自冷却器出水口进入第二管口,并从外部出水口出,反冲洗状态下,通过控制阀的开关控制,介质自外部入水口进入并经第二管口进入冷却器出水口,在冷却器逆循环后,自冷却器进水口进入第一管口,并从外部出水口出。本发明采用水路换向机构实现对冷却器进行反冲洗,避免长期使用带来的积垢现象,而且不需要任何拆装工作,不耗时且无机械通管可能带来的物理性伤害。(The invention relates to a self-cleaning system of a cooling waterway of a compressor, which comprises a cooler, wherein the cooler is provided with a cooler water inlet and a cooler water outlet, a medium enters from an external water inlet and enters the cooler water inlet through a first pipe orifice under the control of a switch of a control valve in a normal working state, enters from the cooler water outlet into a second pipe orifice and exits from the external water outlet after the circulation of the cooler, the medium enters from the external water inlet and enters from the second pipe orifice into the cooler water outlet through the control of the switch of the control valve in a back flushing state, and enters from the cooler water inlet into the first pipe orifice and exits from the external water outlet after the back circulation of the cooler. The invention adopts the waterway reversing mechanism to realize back flushing of the cooler, avoids the phenomenon of scale deposit brought by long-term use, does not need any disassembly and assembly work, does not consume time and does not have physical damage possibly brought by a mechanical through pipe.)
1. Self-cleaning system in compressor cooling water route, including the cooler, be equipped with cooler water inlet and cooler delivery port on the cooler, its characterized in that:
a water path reversing mechanism is arranged between the cooler water inlet and the cooler water outlet and comprises an external water inlet, an external water outlet, a first pipe orifice connected with the cooler water inlet and a second pipe orifice connected with the cooler water outlet, a first pipeline is connected between the external water inlet and the first pipe orifice, a second pipeline is connected between the external water outlet and the second pipe orifice, a third pipeline and a fourth pipeline are respectively connected between the first pipeline and the second pipeline, and control valves are respectively arranged on the first pipeline, the second pipeline, the third pipeline and the fourth pipeline;
under the normal working state, under the on-off control of the control valve, a medium enters from the external water inlet and enters the water inlet of the cooler through the first pipe orifice, and after the cooler circulates, the medium enters from the water outlet of the cooler into the second pipe orifice and exits from the external water outlet;
under the back flushing state, under the control of the switch of the control valve, the medium enters from the external water inlet and enters the water outlet of the cooler through the second pipe orifice, and after the counter circulation of the cooler, the medium enters from the water inlet of the cooler to the first pipe orifice and exits from the external water outlet.
2. The compressor cooling waterway self-cleaning system of claim 1, wherein: the control valves comprise a first control valve, a second control valve, a third control valve and a fourth control valve which are respectively positioned on a first pipeline, a second pipeline, a third pipeline and a fourth pipeline;
under the normal working state, the first control valve and the second control valve are opened, the third control valve and the fourth control valve are closed, a medium enters the first pipeline from the external water inlet and enters the water inlet of the cooler through the first pipeline opening, and after the cooler circulates, the medium enters the second pipeline opening from the water outlet of the cooler and exits from the external water outlet through the second pipeline;
and in a back flushing state, the first control valve and the second control valve are closed, the third control valve and the fourth control valve are opened, the medium enters from the external water inlet, reaches the second pipe orifice through the third pipeline and enters the water outlet of the cooler, and after the counter circulation of the cooler, the medium comes out from the water inlet of the cooler, enters the first pipe orifice, passes through the fourth pipeline and exits from the external water outlet.
3. The compressor cooling waterway self-cleaning system of claim 2, wherein: the water inlet is set as a point A, the first pipe orifice is set as a point B, the second pipe orifice is set as a point C, the external water outlet is set as a point D, the connection points of the third pipeline and the first pipeline and the second pipeline are respectively set as a point E and a point F, the connection points of the fourth pipeline and the first pipeline and the second pipeline are respectively set as a point G and a point H, the point E is arranged at the upstream position of the point G, the first control valve is arranged between the point E and the point G, the point H is arranged at the downstream position of the point F, and the second control valve is arranged between the point H and the point F.
4. The compressor cooling waterway self-cleaning system of claim 3, wherein: the third control valve is arranged at the position, close to the E point, of the third pipeline, and the fourth control valve is arranged at the position, close to the G point, of the fourth pipeline.
5. The compressor cooling waterway self-cleaning system of any one of claims 2 to 4, wherein: the third pipeline is connected with the first pipeline and the second pipeline through three-way pipes respectively, and the fourth pipeline is connected with the first pipeline and the second pipeline through bent pipes.
6. The compressor cooling water self-cleaning system of claim 5, wherein: and the positions of the first pipeline close to the first pipe orifice and the second pipeline close to the second pipe orifice are respectively provided with a pressure sensor.
7. The compressor cooling water self-cleaning system of claim 6, wherein: the first pipeline and the second pipeline are respectively set to be straight pipes.
Technical Field
The invention relates to a cooling water circulation system of a compressor.
Background
Gear speed-up type centrifugal compressor set is generally two-stage or three-stage compression. After each stage of compression, heat is exchanged via an interstage cooler before entering the next stage of compression. The interstage coolers are all tube-fin heat exchangers, and cooling medium-water goes inside the tubes and cooled medium-compressed air goes outside the tubes. Because the heat exchange amount of the compressed air is large and the structure requirement of the whole machine is compact, the inner diameter of the cooling water tube bundle is generally controlled to be about 10 mm. During operation, water absorbs and transfers heat, the water temperature rises, and the scaling phenomenon can be generated along the flowing direction of cooling water. The generation of fouling brings fouling heat resistance which not only seriously affects the heat exchange efficiency, but also brings the increase of on-way resistance. Cleaning of the water tube bundle is therefore of particular importance. At present, the common practice is that after the scale deposit of the water pipeline reaches a certain degree, or when the maintenance period reaches 8000 hours, the inner core is detached from the cooler, the solid round bar with the inner diameter smaller than 10mm is used for removing the scale of the through pipe, and the cooler core is installed back into the unit after removing the scale. The method has large workload and long time consumption in the process of disassembling and assembling the cooler core and the through pipe, and the uncertainty of the mechanical through pipe can cause the thinning of the inner wall of the water pipe bundle and the weakening or damage of the strength. Once the water pipe leaks in the operation process, not only the heat exchange effect becomes poor, can produce serious influence to unit volume steady operation even. Therefore, it is important to find a stable, reliable, efficient and short-time method for cleaning a water pipe bundle.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a self-cleaning system of a cooling water channel, which is convenient to clean.
The invention is realized by the following technical scheme:
a self-cleaning system of a cooling water channel of a compressor comprises a cooler, wherein the cooler is provided with a cooler water inlet and a cooler water outlet,
a water path reversing mechanism is arranged between the cooler water inlet and the cooler water outlet and comprises an external water inlet, an external water outlet, a first pipe orifice connected with the cooler water inlet and a second pipe orifice connected with the cooler water outlet, a first pipeline is connected between the external water inlet and the first pipe orifice, a second pipeline is connected between the external water outlet and the second pipe orifice, a third pipeline and a fourth pipeline are respectively connected between the first pipeline and the second pipeline, and control valves are respectively arranged on the first pipeline, the second pipeline, the third pipeline and the fourth pipeline;
under the normal working state, under the on-off control of the control valve, a medium enters from the external water inlet and enters the water inlet of the cooler through the first pipe orifice, and after the cooler circulates, the medium enters from the water outlet of the cooler into the second pipe orifice and exits from the external water outlet;
under the back flushing state, under the control of the switch of the control valve, the medium enters from the external water inlet and enters the water outlet of the cooler through the second pipe orifice, and after the counter circulation of the cooler, the medium enters from the water inlet of the cooler to the first pipe orifice and exits from the external water outlet.
Preferably, the control valves comprise a first control valve, a second control valve, a third control valve and a fourth control valve which are respectively positioned on the first pipeline, the second pipeline, the third pipeline and the fourth pipeline;
under the normal working state, the first control valve and the second control valve are opened, the third control valve and the fourth control valve are closed, a medium enters the first pipeline from the external water inlet and enters the water inlet of the cooler through the first pipeline opening, and after the cooler circulates, the medium enters the second pipeline opening from the water outlet of the cooler and exits from the external water outlet through the second pipeline;
and in a back flushing state, the first control valve and the second control valve are closed, the third control valve and the fourth control valve are opened, the medium enters from the external water inlet, reaches the second pipe orifice through the third pipeline and enters the water outlet of the cooler, and after the counter circulation of the cooler, the medium comes out from the water inlet of the cooler, enters the first pipe orifice, passes through the fourth pipeline and exits from the external water outlet.
Preferably, the external water inlet is set as point a, the first pipe orifice is set as point B, the second pipe orifice is set as point C, the external water outlet is set as point D, the connection points of the third pipeline and the first pipeline and the second pipeline are respectively set as point E and point F, the connection points of the fourth pipeline and the first pipeline and the second pipeline are respectively set as point G and point H, the point E is arranged at the upstream position of the point G, the first control valve is arranged between the point E and the point G, the point H is arranged at the downstream position of the point F, and the second control valve is arranged between the point H and the point F.
Preferably, the third control valve is arranged at a position close to the E point of the third pipeline, and the fourth control valve is arranged at a position close to the G point of the fourth pipeline.
Preferably, the third pipeline is connected with the first pipeline and the second pipeline through three-way pipes respectively, and the fourth pipeline is connected with the first pipeline and the second pipeline through bent pipes.
Preferably, the first pipeline is close to the first pipe orifice, and the second pipeline is close to the second pipe orifice, and the pressure sensors are respectively arranged on the positions.
Preferably, the first and second pipelines are straight pipes.
The invention adds a waterway reversing mechanism between the water inlet and the water outlet of the cooler, the waterway reversing mechanism is similar to a common pipeline in a normal working state, a medium passes through the waterway reversing mechanism and the cooler to realize a cooling function, and in a reverse flushing state, the waterway reversing mechanism realizes the reverse circulation of the medium in the cooler and carries out flushing cleaning through reverse water flow, thereby avoiding scale deposition caused by long-term operation.
The invention has the beneficial effects that: the invention adopts the waterway reversing mechanism to realize back flushing of the cooler, avoids the phenomenon of scale deposit brought by long-term use, does not need any disassembly and assembly work, does not consume time and does not have physical damage possibly brought by a mechanical through pipe.
Drawings
Fig. 1 is a structural schematic diagram of a waterway reversing mechanism in a normal working state.
Fig. 2 is a structural schematic diagram of a reverse flushing state of the waterway reversing mechanism.
Detailed Description
The invention is described in further detail below with reference to the figures and the detailed description.
As shown in fig. 1 and 2, the self-cleaning system of the cooling water path of the compressor comprises a cooler, wherein a cooler water inlet and a cooler water outlet are arranged on the cooler, and a water path reversing mechanism is arranged between the cooler water inlet and the cooler water outlet. The waterway reversing mechanism comprises an external water inlet 1, an external water outlet 12, a first pipe orifice 5 connected with a water inlet of the cooler and a second pipe orifice 7 connected with a water outlet of the cooler, wherein a first pipeline 2 is connected between the external water inlet and the first pipe orifice, the first pipeline is set to be a straight pipe, a second pipeline 9 is connected between the external water outlet and the second pipe orifice, and the second pipeline is also set to be a straight pipe. The third pipeline 13 and the fourth pipeline 8 are connected between the first pipeline and the second pipeline, the third pipeline is connected with the first pipeline and the second pipeline through three-way pipes, and the fourth pipeline 8 is a bent pipe. The first pipeline, the second pipeline, the third pipeline and the fourth pipeline are respectively provided with a first control valve 3, a second control valve 11, a
Under normal operating condition, first control valve 3, second control valve 11 open,
In a back flushing state, the first control valve 3 and the second control valve 11 are closed, the
And the positions of the first pipeline close to the first pipeline port and the second pipeline close to the second pipeline port are respectively provided with a pressure sensor 4.
The invention controls the medium flow direction of the waterway reversing mechanism through the on-off control of the control valve, so that the medium is fed from the water inlet of the cooler and flows out from the water outlet of the cooler to realize normal work, and when in need, the medium is fed from the water outlet of the cooler and flows out from the water inlet of the cooler to realize reverse flushing. The whole waterway can be washed without disassembly, so that the generation of scale is reduced, and the time of mechanical type pipe passing is prolonged. The machine set is recommended to be washed and cleaned through reverse water flow during routine inspection every week or every month, so that the mechanical type pipe passing time is far longer than the existing 8000 hours, and the service life is greatly prolonged.
The invention is also convenient to install, and only needs to directly connect the waterway reversing mechanism to the water inlet and the water outlet of the cooler.