CN212717232U - Automatic detection and discharge device for circulation of machine seal cooling water of pump in MVR system - Google Patents
Automatic detection and discharge device for circulation of machine seal cooling water of pump in MVR system Download PDFInfo
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- CN212717232U CN212717232U CN202021374731.XU CN202021374731U CN212717232U CN 212717232 U CN212717232 U CN 212717232U CN 202021374731 U CN202021374731 U CN 202021374731U CN 212717232 U CN212717232 U CN 212717232U
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Abstract
The utility model provides an automatic detection and discharge device for circulation of machine seal cooling water of a pump in an MVR system, which comprises a machine seal water tank, a machine seal water pump and a machine seal heat exchanger, wherein a liquid inlet pipe of the machine seal heat exchanger is connected with a liquid outlet pipe of the machine seal water pump, the liquid outlet pipe of the machine seal heat exchanger is connected with a liquid inlet pipe of a machine seal cooling cavity of a material pump, a partition cavity which can be in one-to-one correspondence with the material pump is further arranged in the machine seal water pump, the liquid inlet pipe of the partition cavity is connected with a liquid outlet pipe of the machine seal cooling cavity of the material pump, an overflow port which can be communicated with the machine seal water tank is further arranged at the upper part of the partition cavity, a branch discharge pipe which can penetrate out the machine seal water tank is further connected with the bottom of the partition cavity, a main discharge pipe is further arranged at one side of the machine seal water tank, a first electromagnetic valve is connected with the branch discharge pipe and the main discharge pipe, a conductivity meter is additionally arranged on, and the degree of automation is higher, the non-stop water drainage and water supplement operation can be realized, and the normal operation of the equipment is ensured.
Description
Technical Field
The utility model relates to an automatic detect discharging equipment, especially an automatic detect discharging equipment is used in machine of pump seal cooling water circulation in MVR system.
Background
Need realize the material through the water pump among the MVR system, the operation of water in the system, in order to guarantee the leakproofness of system, the centrifugal pump that the two terminal surfaces machine sealed is adopted to the water pump in the MVR system more, and the water pump that two terminal surfaces machine sealed is at the operation in-process, the mechanical seal for avoiding the pump is burnt out because of high temperature, guarantee that the pump can normal operating, prolong its life as far as possible, then need carry out continuous cooling through water cooling system to the mechanical seal of pump, also be the machine and seal cooling water, in current MVR technology, the machine is sealed the water and is all adopted mobile running water to let in and cool down the mechanical seal of pump, rivers are directly discharged behind the mechanical seal cooling chamber, this kind of mode has reached the mechanical seal cooling's of pump effect, but it has following defect: 1. a large amount of water resources are wasted (one small pump needs machine seal cooling water of 0.2-0.3m3H, when the whole system is provided with 10 pumps, the waste tap water is 2-3m3H); 2. under the condition of water cut-off, the pump can not be started to operate, and the whole system is in a stop state; 3. if the pump is internally leaked, the discharged water outside the mechanical seal can carry materials and waste water, if the mechanical seal water is discharged to a pool to be treated and the like, the load of the system treatment capacity can be increased, and if the mechanical seal water is directly discharged to the environment, the environment can be polluted;
all need the water pump to reach the operation of material, water in the MVR system, seven eight are less for the water pump that every set of system was equipped with, and ten more are more, all use running water to do machine and seal the very big waste of water resource that leads to the fact of cooling water to single set of system is equipped with 10 water pumps, and every set of pump 0.3m3The consumption of mechanical seal water is that each set of system consumes 3m of tap water per hour3The system runs for 24 hours every day, runs for 300 days every year, and is 5 yuan per ton of tap water, so that the annual machine seal water cost is 108000 yuan, the environment and the like are influenced, the requirement of an MVR system on a machine seal cooling water circulation system becomes one of the indispensable requirements of an owner, and the system is a great measure for saving the cost in long-term consideration.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a machine of pump seals automatic checkout discharging equipment for cooling water circulation among MVR system can practice thrift system operation cost greatly, and degree of automation is higher, can realize the normal operating of not shutting down drainage moisturizing operation, assurance equipment.
The utility model provides a following technical scheme:
an automatic detection and discharge device for circulation of machine seal cooling water of a pump in an MVR system comprises a machine seal water tank, a machine seal water pump and a machine seal heat exchanger which are sequentially connected through pipelines, a liquid inlet pipe of the machine seal heat exchanger is connected with a liquid outlet pipe of the machine seal water pump, the liquid outlet pipe of the machine seal heat exchanger is connected with a liquid inlet pipe of a machine seal cooling cavity of a material pump, and the machine seal water pump is also internally provided with a subarea cavity which can be in one-to-one correspondence with the material pump, a liquid inlet pipe of the subarea cavity is connected with a liquid outlet pipe of the machine seal cooling cavity of the material pump, the upper part of the subarea cavity is also provided with an overflow outlet which can be communicated with the inside of the machine seal water tank, the bottom of the partition cavity is also connected with a branch discharge pipe which can penetrate out of the machine seal water tank, one side of the machine seal water tank is also provided with a main discharge pipe, the branch discharge pipe and the main discharge pipe are connected with a first electromagnetic valve, and a conductivity meter is additionally arranged on the partitioned cavity, a liquid level meter is additionally arranged in the mechanical seal water tank, and the opening and closing of a second electromagnetic valve connected to a liquid inlet pipe of the mechanical seal water tank can be controlled through the liquid level detected by the liquid level meter.
Preferably, a temperature sensor is additionally arranged between the liquid outlet pipe of the machine-sealed heat exchanger and the liquid inlet pipe of the machine-sealed cooling cavity of the material pump.
Further, a standby pipe is connected between the liquid inlet pipe of the mechanical seal water tank and the liquid outlet pipe of the mechanical seal water pump, a third electromagnetic valve is connected to the standby pipe, and a fourth electromagnetic valve is connected between the liquid outlet pipe of the mechanical seal water pump and the standby pipe.
Preferably, the liquid inlet pipe of the mechanical water sealing tank is communicated with a tap water pipe.
Preferably, the top of the machine seal water tank is also provided with a vent valve.
Preferably, one side of the machine-sealed water tank is also connected with an overflow pipe communicated with the water collecting tank, and the horizontal plane of the overflow pipe is lower than that of the overflow outlet.
The utility model has the advantages that:
1. the system operation cost is saved, and the cost can be saved by more than one hundred thousand yuan each year;
2. the degree of automation is high, the water discharging and supplementing operation without shutdown can be realized, and the normal operation of the equipment is ensured;
3. the sufficient quality and quantity of the mechanical seal water can well protect the mechanical seal of the material pump, and the service life of the material pump is prolonged;
4. the system is more stable in operation, and the system is not forced to stop due to external reasons such as water supply failure or insufficient water pressure in a factory;
5. the equipment investment cost is low, the water tank, the pipeline and the like can be made of PP materials with lower price, the specification requirement of the plate cooler is lower, and the total equipment investment does not exceed 5 ten thousand yuan;
6. the occupied area is small, the device can be arranged in an MVR system, and the occupied area is not more than 5 square meters generally;
7. the secondary pollutants are less;
8. whether the mechanical seal of the material pump has internal leakage can be monitored, and the mechanical seal can be quickly judged according to the data of the conductivity meter, so that the mechanical seal can be conveniently checked in a near step;
9. the operation is convenient and fast, and the maintenance cost is low;
10. the design is flexible, the specification is complete, and the practicability and pertinence are strong;
11. the market demand is large, and the method is applicable to all engineering projects using water pumps.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural view of the present invention in embodiment 1;
FIG. 2 is a structural sectional view of the water tank;
FIG. 3 is a schematic structural view of the present invention in example 2;
notation in the figure: the device comprises a water tank 1, a water pump 2, a heat exchanger 3, a partitioned cavity 4, an overflow outlet 5, a branched pipe 6, a main pipe 7, a first electromagnetic valve 8, a second electromagnetic valve 9, a conductivity meter 10, a liquid level meter 11, a temperature sensor 12, an emptying valve 13 and a third electromagnetic valve 14, wherein the water tank 1 is a machine-sealed water tank, the water pump 2 is a machine-sealed water pump, the heat exchanger 3 is a machine-sealed heat exchanger; and 15 is a fourth electromagnetic valve.
Detailed Description
Example 1
With reference to fig. 1 to 2, an automatic detection and discharge device for circulation of mechanically sealed cooling water of a pump in an MVR system is provided, in this embodiment, the device includes a mechanically sealed water tank 1, a mechanically sealed water pump 2, and a mechanically sealed heat exchanger 3 connected in sequence by pipes, the mechanically sealed heat exchanger 3 employs a plate heat exchanger, a liquid inlet pipe of the mechanically sealed heat exchanger 3 is connected to a liquid outlet pipe of the mechanically sealed water pump 2, a liquid outlet pipe of the mechanically sealed heat exchanger 3 is connected to a liquid inlet pipe of a mechanically sealed cooling cavity of a material pump, in order to reduce vibration effect when the material pump works, a liquid outlet pipe of the mechanically sealed cooling cavity of the material pump and a liquid inlet pipe of the mechanically sealed cooling cavity of the material pump in this embodiment both employ hoses, and a partition cavity 4 corresponding to the material pump one by one is further provided in the mechanically sealed water pump 2, a liquid inlet pipe of the partition cavity 4 is connected to a liquid outlet pipe of the mechanically sealed cooling cavity of the material pump, an overflow outlet 5 communicating with the interior of the, the bottom of the partition cavity 4 is also connected with a branch exhaust pipe 6 which can penetrate out of the machine seal water tank 1, one side of the machine seal water tank 1 is also provided with a main exhaust pipe 7, the branch exhaust pipe 6 and the main exhaust pipe 7 are connected with a first electromagnetic valve 8, a conductivity meter 10 is additionally arranged on the partition cavity 4, a liquid level meter 11 is additionally arranged in the machine seal water tank 1, the liquid level detected by the liquid level meter 11 can control the opening and closing of a second electromagnetic valve 9 connected to a liquid inlet pipe of the machine seal water tank 1, and the liquid inlet pipe of the machine seal water tank 1 can be communicated with a tap water pipe through the second electromagnetic valve 9; therefore, when the cooling liquid discharged from the machine-sealed cooling cavity liquid outlet pipe of the material pump enters each partition cavity 4 before entering the machine-sealed water tank 1 for the second circulation, and whether the material pump leaks internally is detected in time through the conductivity meter 10 installed on each partition cavity 4, so that the materials mixed with the cooling liquid enter the partition cavities 4, and the liquid level of the cooling liquid entering from the tap water pipe in the original machine-sealed water tank 1 is always lower than the overflow outlet 5, therefore, the tap water cannot be poured into the partition cavities 4, once the corresponding material pump leaks internally in one partition cavity 4, the first electromagnetic valve 8 correspondingly connected below can be controlled to be opened, so that the waste liquid in the branch discharge pipe 6 can not enter the machine-sealed water tank 1 any more and can be directly discharged, and the first electromagnetic valve 8 in the main discharge pipe 7 can be replaced by the liquid entering the machine-sealed water tank 1 from the tap water pipe for a long time although not being opened, gradually diluting the waste liquid which enters the mechanical seal water tank 1 from the partition cavity 4 corresponding to the leakage liquid; in order to timely detect that the heat exchange temperature of the heat exchanger reaches the required heat exchange temperature, a temperature sensor 12 can be additionally arranged between a liquid outlet pipe of the mechanically-sealed heat exchanger 3 and a liquid inlet pipe of a mechanically-sealed cooling cavity of the material pump; in order to avoid the overlarge pressure in the mechanical seal water tank 1, a blow-down valve 13 can be arranged at the top of the mechanical seal water tank 1; and one side of the mechanical water sealing tank 1 is also connected with an overflow pipe communicated with the water collecting tank, and the horizontal plane of the overflow pipe is lower than that of the overflow outlet 5.
The utility model discloses a theory of operation is: before the machine is started for the first time, water is injected into the machine seal water tank 1 through a tap water pipeline and is used as system machine seal circulating water; however, the liquid level in the machine seal water tank 1 is lower than the height of the overflow outlet 5, and then the working fluid in the machine seal water tank 1 is pumped into the machine seal cooling cavity of each material pump through the machine seal water pump 2, and then the machine seal water discharged from the machine seal cooling cavity can be collected into the partition cavity 4 in the machine seal water tank 1 until the liquid level in the partition cavity 4 can overflow, at this time, the water supply pipe stops adding water, and the circulation of the cooling fluid can be realized, and the liquid level in the machine seal water tank 1 is set within a set range through additionally installing the liquid level meter 11, so as to ensure the circulation of the machine seal water, when the conductivity meter 10 on one group of partition cavities 4 detects that the material pump has internal leakage, the first electromagnetic valve 8 under the corresponding partition cavity 4 can be controlled to be opened, so that the waste liquid in the branch discharge pipe 6 can not enter the machine seal water tank 1 any more, but can be directly discharged through the branch discharge pipe 6 through the first electromagnetic, if the first electromagnetic valve 8 in the main exhaust pipe 7 is not opened, the waste liquid which originally enters the machine-sealed water tank 1 from the corresponding partition cavity 4 can be gradually diluted under the liquid replacement circulation that the long-time tap water pipe enters the machine-sealed water tank 1, the water quality of the machine-sealed water can also be ensured, and if the first electromagnetic valve 8 in the main exhaust pipe 7 is opened, the water quality replacement can be accelerated.
Example 2
As shown in fig. 3, the automatic detection and discharge device for circulation of machine seal cooling water of a pump in an MVR system is different from that in embodiment 1 in that a standby pipe is further connected between a liquid inlet pipe of a machine seal water tank 1 and a liquid outlet pipe of a machine seal water pump 2, a third electromagnetic valve 14 is connected to the standby pipe, and a fourth electromagnetic valve 15 is connected between the liquid outlet pipe of the machine seal water pump 2 and the standby pipe.
The working principle different from that of the embodiment 1 is as follows: when the material pump is detected to have internal leakage, the third electromagnetic valve 14 can be closed while the first electromagnetic valves 8 and the fourth electromagnetic valves 15 on all the branch discharge pipes 6 and the main discharge pipe 7 are opened, so that the machine seal cooling can be realized by means of the water flow of a tap water pipe, all the liquid in the machine seal water tank 1 can be quickly replaced, and after the replacement is completed, the circulation is performed again, but the branch discharge pipes 6 corresponding to the leakage are not closed again temporarily until the maintenance is completed, and then the branch discharge pipes are closed again.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
- An automatic detection and discharge device for circulation of machine seal cooling water of a pump in an MVR system is characterized by comprising a machine seal water tank, a machine seal water pump and a machine seal heat exchanger which are sequentially connected through pipelines, wherein a liquid inlet pipe of the machine seal heat exchanger is connected with a liquid outlet pipe of the machine seal water pump, the liquid outlet pipe of the machine seal heat exchanger is connected with a liquid inlet pipe of a machine seal cooling cavity of a material pump, a partition cavity which can be in one-to-one correspondence with the material pump is further arranged in the machine seal water pump, the liquid inlet pipe of the partition cavity is connected with a liquid outlet pipe of the machine seal cooling cavity of the material pump, an overflow outlet which can be communicated with the machine seal water tank is further arranged at the upper part of the partition cavity, a branch discharge pipe which can penetrate out of the machine seal water tank is further connected to the bottom of the partition cavity, a main discharge pipe is further arranged on one side of the machine seal water tank, a first electromagnetic valve is connected to the branch discharge pipe and a conductivity meter is additionally, still be equipped with the level gauge additional in the machine seals the water pitcher, and pass through the steerable connection of liquid level that the level gauge detected is in the opening and closing of the second solenoid valve on the machine seals water pitcher feed liquor pipe.
- 2. The automatic detection and discharge device for circulation of machine seal cooling water of a pump in an MVR system according to claim 1, wherein a temperature sensor is additionally arranged between a liquid outlet pipe of the machine seal heat exchanger and a liquid inlet pipe of a machine seal cooling cavity of a material pump.
- 3. The automatic detection and discharge device for the circulation of the machine seal cooling water of the pump in the MVR system according to claim 1, wherein a standby pipe is further connected between the liquid inlet pipe of the machine seal water tank and the liquid outlet pipe of the machine seal water pump, a third electromagnetic valve is connected to the standby pipe, and a fourth electromagnetic valve is connected between the liquid outlet pipe of the machine seal water pump and the standby pipe.
- 4. The automatic detection and discharge device for circulation of cooling water in machine seal of pump in MVR system of claim 1, wherein the liquid inlet pipe of said water tank is connected to the tap water pipe.
- 5. The automatic discharge detection device for circulation of machine seal cooling water of a pump in MVR system according to claim 1, wherein a blow-down valve is further installed on the top of the machine seal water tank.
- 6. The automatic detection and discharge device for circulation of machine seal cooling water of a pump in an MVR system according to claim 1, wherein an overflow pipe communicated with a water collecting tank is further connected to one side of the machine seal water tank, and the level of the overflow pipe is lower than that of the overflow outlet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021374731.XU CN212717232U (en) | 2020-07-13 | 2020-07-13 | Automatic detection and discharge device for circulation of machine seal cooling water of pump in MVR system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021374731.XU CN212717232U (en) | 2020-07-13 | 2020-07-13 | Automatic detection and discharge device for circulation of machine seal cooling water of pump in MVR system |
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| CN212717232U true CN212717232U (en) | 2021-03-16 |
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| CN202021374731.XU Active CN212717232U (en) | 2020-07-13 | 2020-07-13 | Automatic detection and discharge device for circulation of machine seal cooling water of pump in MVR system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114753942A (en) * | 2022-04-15 | 2022-07-15 | 山东钢铁集团日照有限公司 | Toxic and harmful medium pump mechanical seal cooling water circulating cooling device and cooling method |
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2020
- 2020-07-13 CN CN202021374731.XU patent/CN212717232U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114753942A (en) * | 2022-04-15 | 2022-07-15 | 山东钢铁集团日照有限公司 | Toxic and harmful medium pump mechanical seal cooling water circulating cooling device and cooling method |
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