CN212082081U - Excessive overflow prevention device and smoke exhaust system of flue gas waste heat recovery system - Google Patents
Excessive overflow prevention device and smoke exhaust system of flue gas waste heat recovery system Download PDFInfo
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- CN212082081U CN212082081U CN202020600198.8U CN202020600198U CN212082081U CN 212082081 U CN212082081 U CN 212082081U CN 202020600198 U CN202020600198 U CN 202020600198U CN 212082081 U CN212082081 U CN 212082081U
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Abstract
The utility model discloses a flue gas waste heat recovery system prevent excessive overflow arrangement and system of discharging fume, wherein, flue gas waste heat recovery system prevent excessive overflow arrangement and include main water tank, still include: the ball float valve is arranged at the water outlet of the main water tank; and closing the float valve based on the fact that the water quantity in the overflowing water recovery device exceeds a preset threshold value. Through excessive overflow prevention device of the flue gas waste heat recovery system, the phenomenon that the excessive overflow of a main water tank leads to the overflow water recovery device such as a drainage ditch after the flue gas waste heat recovery system stops pumping is effectively prevented.
Description
Technical Field
The utility model relates to a flue gas waste heat recovery field especially relates to a flue gas waste heat recovery system prevents excessive overflow arrangement and system of discharging fume.
Background
In the existing flue gas waste heat recovery system, flue gas exchanges heat in the spray heat exchanger, sprayed water automatically flows through a pipeline or is pumped into the main water tank through a pump, and the water with higher temperature entering the main water tank is pumped into the spray heat exchanger again through the spray pump to be sprayed after being cooled through the heat pump or the heat exchange device, so that the spray water can be recycled.
However, because the flue gas contains a large amount of water vapor, a large amount of condensed water is also generated when the flue gas is cooled, so that the amount of water flowing back to the main water tank usually exceeds the amount of water pumped by the spray pump, and therefore, the amount of water in the main water tank is continuously increased. The main tank is therefore provided with an overflow pipe which, when the liquid level reaches the overflow pipe of the main tank, begins to overflow outwards and is sent to a drain or other overflow water container.
The system has no problem in normal operation, but when the spray pump stops, the overflow amount of the main water tank can be rapidly increased, and the maximum accommodating capacity of a drainage ditch or a corresponding container can be exceeded, so that the water overflows excessively and the like. Especially in the application of flue gas waste heat recovery heating, in order to prevent the problem of water storage and freezing pipe in the pipeline after the pump is stopped, the return pipe of the common spray heat exchanger is higher than the liquid level of the return pipe of the main water tank, so that the amount of water flowing back to the water tank after the pump is stopped is very large, and the risk of excessive overflow is very large.
SUMMERY OF THE UTILITY MODEL
Objects of the invention
The utility model aims at providing a flue gas waste heat recovery system prevent excessive overflow arrangement and system of discharging fume to it leads to excessive overflow water recovery unit to prevent effectively that a large amount of overflows of flue gas waste heat recovery system pump stopping back main water tank, the phenomenon of excessive overflow such as escape canal.
(II) technical scheme
In order to solve the above problem, an aspect of the embodiment of the present invention provides an excessive overflow preventing device for a flue gas waste heat recovery system, including main water tank 1, further including: the ball float valve 2, the ball float valve 2 locates the outlet port of the main water tank 1; based on the water volume in the overflow water recovery device 3 exceeding a preset threshold, the float valve 2 is closed.
Further, the float valve 2 includes: the floating ball 21 and a pipe orifice plug 22 fixedly connected with the floating ball 21; based on the rising of the water surface of the overflowed water recovery device 3, the floating ball 21 floats upwards to drive the pipe orifice plug 22 to block the water outlet of the main water tank 1.
Further, the float valve 2 further includes: a connecting rod 23; two ends of the connecting rod 23 are respectively fixedly connected with the floating ball 21 and the pipe orifice plug 22; the pipe orifice plug 22 is movably connected with the water outlet of the main water tank 1.
Further, the float valve 2 further includes: positioning a rod; the positioning rod is used for positioning the floating and sinking direction of the floating ball 21.
Further, excessive overflow prevention device of the flue gas waste heat recovery system further comprises: an emergency water storage device 4; the inlet of the emergency water storage device 4 is communicated with the overflow water outlet of the main water tank 1, and the outlet of the emergency water storage device 4 is provided with a ball float valve 2.
Further, the water inlet of the emergency water storage device 4 is communicated with the overflow water outlet of the main water tank 1 through a pipeline.
Further, an overflow water tank is arranged between the water inlet of the emergency water storage device 4 and the overflow water outlet of the main water tank 1; when the water level in the main water tank 1 is higher than the overflow water outlet, the redundant water flows into the emergency water storage device 4 along the overflow water tank.
Furthermore, the volume of the emergency water storage tank is more than or equal to the total water quantity which flows back to the main water tank 1 after the pump is stopped.
Further, the overflow water recovery device 3 is a drainage ditch or an overflow water container.
The utility model discloses another aspect provides a system of discharging fume, is provided with the excessive overflow arrangement of preventing of flue gas waste heat recovery system as recorded before.
(III) advantageous effects
The above technical scheme of the utility model has following profitable technological effect:
the utility model provides a flue gas waste heat recovery system prevent excessive overflow arrangement and system of discharging fume prevents effectively that flue gas recovery system from stopping a large amount of overflows of back main water tank and leading to overflowing out water recovery unit, the phenomenon of the excessive overflow in escape canal for example.
Drawings
FIG. 1 is a schematic structural diagram of a conventional flue gas waste heat recovery system;
fig. 2 is a schematic structural diagram of an excessive overflow preventing device of a flue gas waste heat recovery system provided by the embodiment of the present invention;
fig. 3 is a schematic structural diagram of a float valve according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a float valve provided in the second embodiment of the present invention;
reference numerals:
1-a main water tank, 2-a ball float valve, 21-a ball float, 22-a pipe orifice plug, 23-a connecting rod, 3-an overflow water recovery device, 4-an emergency water storage device, 5-a spray heat exchanger and 6-a spray pump.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The structure schematic diagram according to the embodiment of the present invention is shown in the attached drawings. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity. The shapes of various regions, layers, and relative sizes and positional relationships therebetween shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, as actually required.
It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Referring to fig. 1, in the flue gas waste heat recovery process, flue gas exchanges heat in a spray heat exchanger 5, sprayed water flows automatically through a pipeline or is pumped into a main water tank 1 through a pump, and water with higher temperature entering the main water tank 1 is cooled through a heat pump or a heat exchange device and then is pumped into the spray heat exchanger 5 again through a spray pump 6 for spraying so as to recycle spray water.
The overflow water outlet of the main water tank 1 is arranged at the middle upper part of the main water tank 1, and when the water in the main water tank 1 continuously accumulates to the overflow water outlet, the water overflows and is discharged and is sent to the overflow water recovery device 3. After the spray pump 6 stops working, the water in the main water tank 1 does not flow back to the spray heat exchanger 5 any more, so the water in the main water tank 1 is greatly increased, and the water discharged into the overflow water recovery device 3 exceeds the capacity of the overflow water recovery device 3.
Referring to fig. 2, an aspect of the present invention provides an excessive overflow preventing device for a flue gas waste heat recovery system, including a main water tank 1, further including: the ball float valve 2, the ball float valve 2 locates the outlet port of the main water tank 1; based on the water volume in the overflow water recovery device 3 exceeding a preset threshold, the float valve 2 is closed.
The preset threshold is less than or equal to the capacity of the overflow water recovery device 3. The ball float valve 2 is arranged on the liquid level of the overflow water recovery device 3 in a floating manner, when the water amount in the overflow water recovery device 3 reaches the capacity, namely the liquid level of the overflow water recovery device 3 rises to the maximum allowable height, the ball float valve 2 rises to the water outlet of the main water tank 1 along with the liquid level and blocks the water outlet, and the water in the main water tank 1 is cut off to continuously flow into the overflow water recovery device 3, so that the excessive overflow of the overflow water recovery device 3 is avoided. The position of the ball float 2 corresponds to the position of the water outlet of the main water tank 1.
In some embodiments, the float valve 2 comprises: the floating ball 21 and a pipe orifice plug 22 fixedly connected with the floating ball 21; based on the rising of the water surface of the overflowed water recovery device 3, the floating ball 21 floats upwards to drive the pipe orifice plug 22 to block the water outlet of the main water tank 1.
In some embodiments, the float valve 2 further comprises: a connecting rod 23; two ends of the connecting rod 23 are respectively fixedly connected with the floating ball 21 and the pipe orifice plug 22; the pipe orifice plug 22 is movably connected with the water outlet of the main water tank 1.
One end of the pipe orifice plug 22 is movably connected with the water outlet of the main water tank 1, the other end of the pipe orifice plug is controlled by the floating ball 21, the whole floating ball valve 2 forms a certain angle with the water outlet of the main water tank 1, when the water surface rises, the floating ball 21 rises to gradually reduce the angle until the pipe orifice plug 22 is completely buckled with the water outlet of the main water tank 1, and therefore the water outlet is blocked.
In some embodiments, the float valve 2 further comprises: positioning a rod; the positioning rod is used for positioning the floating and sinking direction of the floating ball 21.
Alternatively, a positioning rod is provided in the direction of the drain port of the main tank 1 so that the float 21 more accurately closes the drain port.
In some embodiments, the excess overflow preventing device of the flue gas waste heat recovery system further comprises: an emergency water storage device 4; the inlet of the emergency water storage device 4 is communicated with the overflow water outlet of the main water tank 1, and the outlet of the emergency water storage device 4 is provided with a ball float valve 2.
In some embodiments, the inlet of the emergency water reservoir 4 is in communication with the overflow water outlet of the main tank 1 via a pipe.
In some embodiments, an overflow water tank is provided between the water inlet of the emergency water storage device 4 and the overflow water outlet of the main water tank 1; when the water level in the main water tank 1 is higher than the overflow water outlet, the redundant water flows into the emergency water storage device 4 along the overflow water tank.
Optionally, an overflow hole is arranged between the water inlet of the emergency water storage device 4 and the overflow water outlet of the main water tank 1; when the water level in the main water tank 1 is higher than the overflow water outlet, the redundant water flows into the emergency water storage device 4 along the overflow hole.
In some embodiments, the volume of the emergency reservoir is equal to or greater than the total volume of water that is returned to the main tank 1 after the pump is stopped.
In some embodiments, the overflow water recovery means 3 is a gutter or overflow water container.
The utility model discloses another aspect provides a system of discharging fume, is provided with the excessive overflow arrangement of preventing of flue gas waste heat recovery system as recorded before.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (10)
1. The utility model provides a flue gas waste heat recovery system prevents excessive overflow arrangement, includes main water tank (1), its characterized in that still includes:
the ball float valve (2), the said ball float valve (2) locates the drainage outlet of the said main cistern (1);
and closing the ball float valve (2) based on the fact that the water amount in the overflowing water recovery device (3) exceeds a preset threshold value.
2. The excessive overflow preventing device of a flue gas waste heat recovery system according to claim 1, wherein the ball float valve (2) comprises: the floating ball (21) and a pipe orifice plug (22) fixedly connected with the floating ball (21);
based on the rising of the water surface of the overflow water recovery device (3), the floating ball (21) floats upwards to drive the pipe orifice plug (22) to block the water outlet of the main water tank (1).
3. The excessive overflow preventing device of a flue gas waste heat recovery system according to claim 2, wherein the ball float valve (2) further comprises: a link (23);
two ends of the connecting rod (23) are respectively fixedly connected with the floating ball (21) and the pipe orifice plug (22);
the pipe orifice plug (22) is movably connected with a water outlet of the main water tank (1).
4. The excessive overflow preventing device of a flue gas waste heat recovery system according to claim 2, wherein the ball float valve (2) further comprises: positioning a rod;
the positioning rod is used for positioning the floating and sinking direction of the floating ball (21).
5. The excess overflow preventing device of the flue gas waste heat recovery system according to claim 1, further comprising: an emergency water storage device (4);
the inlet of the emergency water storage device (4) is communicated with the overflow water outlet of the main water tank (1), and the outlet of the emergency water storage device (4) is provided with the ball float valve (2).
6. The excessive overflow preventing device of the flue gas waste heat recovery system according to claim 5,
and a water inlet of the emergency water storage device (4) is communicated with an overflow water outlet of the main water tank (1) through a pipeline.
7. The excessive overflow preventing device of the flue gas waste heat recovery system according to claim 5,
an overflow water tank is arranged between the water inlet of the emergency water storage device (4) and the overflow water outlet of the main water tank (1);
when the water level in the main water tank (1) is higher than the overflow water outlet, the redundant water flows into the emergency water storage device (4) along the overflow water tank.
8. The excessive overflow preventing device of the flue gas waste heat recovery system according to claim 5,
the volume of the emergency water storage tank is more than or equal to the total water quantity which flows back to the main water tank (1) after the pump is stopped.
9. The excessive overflow preventing device of the flue gas waste heat recovery system according to claim 1, wherein the overflow water recovery device (3) is a drainage ditch or an overflow water container.
10. A smoke evacuation system characterized in that an excessive overflow preventing device of a smoke waste heat recovery system as claimed in any one of claims 1 to 9 is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020600198.8U CN212082081U (en) | 2020-04-20 | 2020-04-20 | Excessive overflow prevention device and smoke exhaust system of flue gas waste heat recovery system |
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| CN202020600198.8U CN212082081U (en) | 2020-04-20 | 2020-04-20 | Excessive overflow prevention device and smoke exhaust system of flue gas waste heat recovery system |
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| CN212082081U true CN212082081U (en) | 2020-12-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114210432A (en) * | 2021-12-14 | 2022-03-22 | 枣阳惠祥有机硅有限公司 | Pulverizer for dimethyl cyclosiloxane |
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2020
- 2020-04-20 CN CN202020600198.8U patent/CN212082081U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114210432A (en) * | 2021-12-14 | 2022-03-22 | 枣阳惠祥有机硅有限公司 | Pulverizer for dimethyl cyclosiloxane |
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