CN110143652B - Water control type industrial circulating water dosing method and dosing system - Google Patents
Water control type industrial circulating water dosing method and dosing system Download PDFInfo
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- CN110143652B CN110143652B CN201910367368.4A CN201910367368A CN110143652B CN 110143652 B CN110143652 B CN 110143652B CN 201910367368 A CN201910367368 A CN 201910367368A CN 110143652 B CN110143652 B CN 110143652B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 324
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000003814 drug Substances 0.000 claims abstract description 153
- 230000001502 supplementing effect Effects 0.000 claims abstract description 117
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 74
- 230000005484 gravity Effects 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims description 41
- 238000010790 dilution Methods 0.000 claims description 33
- 239000012895 dilution Substances 0.000 claims description 33
- 230000001105 regulatory effect Effects 0.000 claims description 15
- 239000013589 supplement Substances 0.000 claims description 13
- 239000000243 solution Substances 0.000 claims description 12
- 230000001276 controlling effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 12
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000007865 diluting Methods 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000003020 moisturizing effect Effects 0.000 abstract 2
- 229940079593 drug Drugs 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000007726 management method Methods 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 239000002455 scale inhibitor Substances 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000003619 algicide Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Accessories For Mixers (AREA)
Abstract
The utility model provides a water accuse formula industrial circulating water dosing method and dosing system, the position of buffer tank is less than the medicine storage tank, the medicine storage tank passes through pipeline intercommunication buffer tank, set up blender, second metering valve on this communicating pipeline, first metering valve is still connected to the blender for the pipeline that the blender is located produces siphon effect and medicament self gravity and the degree of opening of first metering valve, second metering valve when the buffer tank carries out the moisturizing, will store the water treatment agent of being diluted in the medicine storage tank, introduce the moisturizing in the blender according to the proportion through opening the metering valve and flow into the buffer tank after diluting on line. The device has the advantages that negative pressure generated by water supplementing water flow and gravity of the medicament are used as the addition of the water treatment agent to provide continuous power, the medicament is added in a circulating water system without additional energy consumption, remote medicament adding can be realized, more choices are provided for a medicament adding device and a medicament placing point, multi-point simultaneous medicament adding can be realized, medicament dispersing is accelerated, the domestication effect of the medicament on water quality is enhanced, and the whole medicament adding system has no strict air tightness requirement.
Description
Technical Field
The invention relates to the field of industrial circulating water treatment, in particular to a water control type industrial circulating water dosing method and a dosing system.
Background
At present, in the operation management of a circulating water system, the water treatment agent is added into the system mainly for several purposes, namely, the operation concentration multiple of the system is improved, the water resource is saved, and the operation cost is reduced; stabilizing water quality, domesticating water body, reducing the risk of scaling and corrosion of the system caused by various ions, dissolved oxygen, biological slime or particles and the like in water; the medicament directly acts on the surfaces of equipment and pipelines, improves the interface condition and plays a role in protection. The water treatment agent adding mode mainly comprises two modes, one mode is that the agent is conveyed to a designated position through a metering pump, the method can realize uniform adding of the agent for 24 hours, the agent adding point can be optimized, the water treatment agent performance is effectively ensured, the water treatment agent adding mode needs electric power and the metering pump, the equipment operation management is relatively complex, the equipment service period is limited to a certain extent, the operation cost is high, and the method is suitable for a large-scale circulating water system. In medium and small-sized circulating water systems, a mode of directly pouring the medicament or dripping the medicament into a circulating water pond under the gravity action of the medicament is adopted, the mode is limited in the selection of a water treatment agent feeding port, and the medicament feeding principle is often violated, so that the medicament is influenced in the aspects of diffusion efficiency, action effect and the like, the medicament is easy to waste, and the stable operation and the management of the system are not facilitated. The invention patent (CN 101121567A) discloses a method and a device for adding medicine into unpowered circulating water, which utilize the suction negative pressure of a circulating pump to uniformly and continuously add the medicine into a circulating water pipe network without configuring a metering pump, and uniformly mix the medicine in the circulating water through the stirring action of a pump impeller to directly act on the heat exchange surface of each heat exchange device. The patent utilizes the original equipment of the circulating water system, reduces additional power supply and equipment investment, simplifies the medicament adding mode, reduces the system operation cost, and solves the problems of medicament dispersibility and the like. The implementation of the method of the patent needs to modify the original facilities of the system, has certain requirements on the air tightness of the dosing device, and is limited in the selection of the dosing port of the medicament. Generally, the use concentration of the agent is limited in scope, and the effect is better when the concentration is higher, especially the use of a corrosion and scale inhibitor with stronger acidity and an oxidative sterilization algicide is easier, and the equipment is easy to be negatively influenced when the concentration is higher. The main purpose of the addition of the water treatment agent is to domesticate and stabilize water bodies, protect equipment, improve the concentration multiple of circulating cooling water, reduce the system running cost, and the addition mode and the selection of addition points of the water treatment agent play an important role in the running management of the circulating water cooling water, wherein whether the water treatment agent can be dispersed effectively in time is particularly critical.
Disclosure of Invention
The invention aims to provide a water control type industrial circulating water dosing method and a dosing system, which can effectively disperse and dose a water treatment agent to all parts of a system in time through power generated by water supply, shorten the domestication time of circulating water, improve the acting performance of the agent and reduce the running cost of the system.
The solution of the invention is as follows:
the basic technical scheme of the invention is as follows: the negative pressure generated by the water supplementing flow and the gravity effect of the medicament are used for uniformly introducing the medicament into the buffer tank, the medicament is conveyed to each medicament adding port of the system by utilizing the carrier effect of the water flow, the remote continuous and uniform medicament adding is realized, the medicament diffusion is accelerated, the medicament use efficiency is improved, the medicament use amount is reduced, the system operation cost is reduced, and meanwhile, convenience is provided for the placement of a medicament adding system and the selection of medicament storage points.
Based on the basic technical scheme, the invention comprises the following steps:
a water-controlled industrial circulating water dosing method, comprising the steps of:
(1) Setting a medicine storage tank (G1) and a buffer tank (G2), wherein the position of the buffer tank (G2) is lower than that of the medicine storage tank (G1); the medicine storage tank (G1) and the buffer tank (G2) are communicated through a pipeline, a mixer (H1) and a second metering valve (J2) are arranged on the pipeline, one inlet end of the mixer is connected with the medicine storage tank (G1), the other inlet end of the mixer is connected with the first metering valve (J1), the outlet end of the mixer (H1) is connected with the second metering valve (J2), the outlet of the second metering valve (J2) is connected with the lower end of a water supplementing pipeline, the mixed water is fed into the buffer tank (G2), and a first water supplementing valve (K5) is arranged at the upper end of the water supplementing pipeline; the siphon effect and the self gravity of the medicament and the opening degree of the first metering valve (J1) and the second metering valve J2 are generated when the pipeline of the mixer (H1) is used for supplementing water, the diluted water treatment agent in the medicine storage tank (G1) is introduced into the mixer (H1) in proportion by opening the metering valve (J1) for online dilution, and then flows into the buffer tank (G2);
(2) The inlet end of the first metering valve (J1) is communicated with a second water supplementing valve (K6), and the adding time of the water treatment agent in the medicine storage tank (G1) is controlled by adjusting the proportion of on-line dilution water supplementing and water treatment agent in the mixer (H1);
(3) When the buffer tank (G2) is replenished with water, the water replenished by a first water replenishing valve (K5) communicated above the buffer tank (G2) is impacted downwards to enter the buffer tank (G2), and water flow at the lower end of a water replenishing pipeline generates siphon negative pressure to send the medicament at the outlet of the mixer (H1) into the buffer tank (G2);
(4) And each specified dosing port is connected with the buffer tank (G2), and the outlet pipe ends of the specified dosing ports keep the same horizontal plane which is lower than the liquid level of the buffer tank (G2).
The more specific technical scheme also comprises: in the step (2), in the step of adjusting the on-line dilution and water supplementing, a mode of controlling the water head height of the pressure balancer (P1) is adopted to adjust, so that the water head height of the pressure balancer (P1) synchronously changes along with the change of the liquid level of the medicine storage tank (G1), and the adding time of the water treatment agent in the medicine storage tank (G1) is controlled by adjusting the proportion of the on-line dilution and water supplementing agent and the water treatment agent in the mixer (H1).
Further: the step of synchronously changing the water head height of the pressure balancer (P1) along with the liquid level height of the medicine storage tank (G1) is as follows: the pressure balancer (P1) is connected with the pontoon, the pontoon and the pressure balancer (7) are placed in the liquid medicine in the medicine storage tank (G1), and the buoyancy of the pontoon synchronously changes the water head height of the pressure balancer (P1) along with the change of the liquid level of the medicine storage tank (G1).
Further: the method also comprises the steps of: a fourth water supplementing valve (K8) is connected below the liquid level of the buffer tank (G2), and the outflow of the solution in the buffer tank (G2) is regulated by opening the fourth water supplementing valve (K8), so that the water treatment agent after high-power dilution is conveyed to a designated dosing port through a pipeline.
A water-controlled industrial circulating water dosing system for implementing the method of claim 1, comprising a drug storage tank (G1), a buffer tank (G2), wherein the buffer tank (G2) is located lower than the drug storage tank (G1); the medicine storage tank (G1) is communicated with the buffer tank (G2) through a pipeline, a mixer (H1) and a second metering valve (J2) are arranged on the communicating pipeline, an outlet of the second metering valve (J2) is connected with the lower end of a water supplementing pipeline, the mixed water is fed into the buffer tank (G2), and a first water supplementing valve (K5) is arranged at the upper end of the water supplementing pipeline; one inlet end of the mixer is connected with a medicine storage tank (G1), the other inlet end of the mixer is connected with a first metering valve (J1), and the outlet end of the mixer (H1) is connected with a second metering valve (J2), so that siphonage and self gravity of the medicine and opening degree of the first metering valve (J1) and the second metering valve (J2) are generated when the pipeline where the mixer (H1) is positioned supplements water in the buffer tank, the diluted water treatment agent in the medicine storage tank (G1) is introduced into the mixer (H1) in proportion by opening the metering valve (J1) to perform on-line dilution, and then flows into the buffer tank (G2); the inlet end of the first metering valve (J1) is communicated with a second water supplementing valve (K6), and the adding time of the water treatment agent in the medicine storage tank (G1) is controlled by adjusting the proportion of on-line dilution water supplementing and water treatment agent in the mixer (H1); the upper part of the buffer tank (G2) is connected with a first water supplementing valve (K5) through a pipeline, so that water supplementing fed through the first water supplementing valve (K5) directly impacts the liquid level of the buffer tank (G2); the inlet end of the first metering valve (J1) is communicated with the second water supplementing valve (K6), and the adding time of the water treatment agent in the medicine storage tank (G1) is controlled by adjusting the proportion of the on-line dilution water supplementing agent and the water treatment agent in the mixer (H1).
The more specific technical scheme also comprises: the medicine storage tank (G1) is provided with a vertical guide rod, the guide rod is sleeved with the pressure balancer (P1), the pressure balancer (P1) is of a double-cavity structure, one cavity is an air chamber (B) forming a pontoon, and the other cavity is a water supplementing chamber (A), so that the pressure balancer (P1) is kept at a constant water head height under the buoyancy action of the air chamber (B); the water supplementing chamber (A) is provided with a water inlet (1) and a water outlet (3), the water inlet is connected with a second water supplementing valve (K6) through a flexible pipe, and the water outlet (3) is connected with a first metering valve (J1) through a flexible pipe.
Further: the water supplementing chamber (A) is also provided with an overflow port (2) so as to ensure that the liquid level of the water supplementing chamber (A) is kept at a constant height.
Further: a fourth water supplementing valve (K8) is connected below the liquid level of the buffer tank (G2), and the outflow of the solution in the buffer tank (G2) is regulated by opening the fourth water supplementing valve (K8), so that the water treatment agent after high-power dilution is conveyed to a designated dosing port through a pipeline.
Further: the outlet end of the buffer tank (G2) is communicated with each appointed dosing port through a pipeline, and the outlet pipe ends of the appointed dosing ports keep the same horizontal plane which is lower than the liquid level of the buffer tank (G2).
Further: the lowest part at the bottom of the medicine storage tank (G1) is provided with a pipeline provided with a drain valve (K9), and the pipeline is communicated with a pipeline of a fourth water supplementing valve (K8) communicated with the buffer tank (G2) and is connected below the liquid level of the buffer tank (G2).
If the medicine adding port selects the water supplementing port, the water returning port, the water absorbing well, the water collecting tank and the like of the circulating water system, the purpose of effectively dispersing the medicine in time is achieved by utilizing the running characteristics of the circulating cooling water, and the efficiency of domesticating the water body and stabilizing the water quality by the medicine is improved.
The invention has the advantages that:
1. the method for adding the chemical into the circulating water system can provide continuous power by taking negative pressure generated by water supplementing water flow and gravity of the chemical as the addition of the water treatment agent, and does not need additional energy consumption;
2. the remote dosing can be realized, and more choices are provided for a dosing device and a medicament placement point;
3. the multi-point simultaneous dosing can be realized, the dispersion of the medicament is accelerated, and the domestication effect of the medicament on water quality is enhanced;
4. the system has clear principle, simple structure, easy maintenance and safe and convenient operation;
5. the whole drug adding system has no strict air tightness requirement.
Drawings
FIG. 1 is a schematic diagram of the dosing system of the present invention.
Fig. 2 is a schematic structural view of the pressure balancer P1 of the present invention.
Detailed Description
The dosing method of the invention comprises the following steps:
1. setting a medicine storage tank G1 and a buffer tank G2, wherein the position of the buffer tank G2 is lower than that of the medicine storage tank G1; the medicine storage tank G1 and the buffer tank G2 are communicated through a pipeline, a mixer H1 and a second metering valve J2 are arranged on the pipeline, one inlet end of the mixer is connected with the medicine storage tank G1, the other inlet end of the mixer is connected with the first metering valve J1, the outlet end of the mixer H1 is connected with the second metering valve J2, the outlet of the second metering valve J2 is connected with the lower end of a water supplementing pipeline, a structure in which the second metering valve J2 and the lower end of the water supplementing pipeline are converged is formed, liquid in the two paths is converged and then sent into the buffer tank G2, and a first water supplementing valve K5 is arranged at the upper end of the water supplementing pipeline; under the action of siphon negative pressure and self gravity generated by water flow formed when the first water supplementing valve K5 is opened to supplement water to the buffer tank, the first metering valve J1 and the second metering valve J2 are opened to introduce water supplement into the mixer H1 in proportion for online dilution, and the diluted water treatment agent in the medicine storage tank G1 is introduced into the mixer H1 in proportion for online dilution by opening the metering valve J1 and flows into the buffer tank G2;
the pressure of the water supplementing pipeline is changed according to the actual situation, but the degree of the change is not particularly large, the first water supplementing valve K5 is arranged on the upper surface of the buffer tank, and the situation that the water supplementing is reversely filled into the medicament tank G1 or the outflow amount of the solution at the tail end of the mixer H1 is influenced due to the fact that the opening degree of the first water supplementing valve K5 possibly occurs along with the change of the pressure of a pipe network is considered, and finally the adding of the medicament is influenced, so the first water supplementing valve K5 needs to be arranged at the upper end of a medicament outlet;
2. the inlet end of the first metering valve J1 is communicated with a second water supplementing valve K6, and the adding time of the water treatment agent in the medicine storage tank G1 is controlled by adjusting the proportion of on-line dilution water supplementing and water treatment agent in the mixer H1;
3. when the buffer tank G2 is replenished with water, the water replenished by the first water replenishing valve K5 communicated above the buffer tank G2 is impacted downwards to enter the buffer tank G2, and the water flow at the lower end of the water replenishing pipeline generates siphon negative pressure to send the medicament at the outlet of the mixer H1 into the buffer tank G2;
4. the outlet pipe ends of the specified dosing ports are kept at the same horizontal plane, and the horizontal plane is lower than the liquid level of the buffer tank G2;
5. in the step 2, in the on-line dilution water supplementing step, the water head height of the pressure balancer P1 is regulated in a mode of controlling the water head height of the pressure balancer P1, so that the water head height of the pressure balancer P1 synchronously changes along with the change of the liquid level height of the medicine storage tank G1, and the adding time of the water treatment agent in the medicine storage tank G1 is controlled by regulating the proportion of on-line dilution water supplementing and water treatment agent in the mixer H1;
the pressure balancer P1 is arranged in the medicine storage tank G1, so that the gravity action of the medicine is guaranteed to be consistent with the liquid level height action of on-line dilution water supplement, and the medicine is increased and decreased simultaneously. However, in the mixer H1, the part is at a certain inclination angle, and the water outlet of the online water supplement is near the water outlet of the mixer H1, so that the online water supplement can flow out preferentially when entering the mixer, and the insufficient part is supplemented by the medicament to meet the requirement of the whole pipeline pressure and flow, so that the larger the opening degree of J1 is, the more the online water supplement is, the proportion of the medicament flowing out of the tail end of the mixer is correspondingly reduced, the medicament outflow time can be prolonged, otherwise, the medicament outflow time can be shortened, and the opening degree of J1 can directly influence the dripping time of the medicament in the medicament storage tank;
6. the step of synchronously changing the water head height of the pressure balancer P1 along with the liquid level height of the medicine storage tank G1 is as follows: the pressure balancer P1 is connected with a pontoon, the pontoon and the pressure balancer 7 are arranged in the liquid medicine in the medicine storage tank G1, and the buoyancy of the pontoon synchronously changes the water head height of the pressure balancer P1 along with the change of the liquid level of the medicine storage tank G1;
7. a fourth water supplementing valve K8 is connected under the liquid surface of the buffer tank G2, and the outflow of the solution in the buffer tank G2 is regulated by opening the fourth water supplementing valve K8, so that the water treatment agent after high-power dilution is conveyed to a designated dosing port through a pipeline.
The medicine adding system for realizing the medicine adding method is shown in fig. 1, and comprises a medicine storage tank G1 and a buffer tank G2, wherein the buffer tank G2 is lower than the medicine storage tank G1; the medicine storage tank G1 is communicated with the buffer tank G2 through a pipeline, a mixer H1 and a second metering valve J2 are arranged on the communicating pipeline, one inlet end of the mixer is connected with the medicine storage tank G1, the other inlet end of the mixer is connected with the first metering valve J1, the outlet end of the mixer H1 is connected with the second metering valve J2, the outlet of the second metering valve J2 is connected with the lower end of a water supplementing pipeline, the mixed water is fed into the buffer tank G2 after being converged, and the upper end of the water supplementing pipeline is provided with a first water supplementing valve K5; the pipeline where the mixer H1 is positioned generates siphoning effect and the gravity of the medicament and the opening degree of the first metering valve J1 and the second metering valve J2 when the buffer tank supplements water, the diluted water treatment agent in the medicine storage tank G1 is introduced into the mixer H1 in proportion by opening the metering valve J1 to perform online dilution, and then flows into the buffer tank G2; the inlet end of the first metering valve J1 is communicated with a second water supplementing valve K6, and the adding time of the water treatment agent in the medicine storage tank G1 is controlled by adjusting the proportion of on-line dilution water supplementing and water treatment agent in the mixer H1; the upper part of the buffer tank G2 is connected with a first water supplementing valve K5 through a pipeline, the first water supplementing valve K5 is suspended at the upper end of the buffer tank G2, so that the water supplementing fed through the first water supplementing valve K5 directly impacts the liquid level of the buffer tank G2, siphon negative pressure is generated through the jet flow effect of water, and the effect of diluting the medicament can be achieved; the inlet end of the first metering valve J1 is communicated with a second water supplementing valve K6, the adding time of the water treatment agent in the medicine storage tank G1 is controlled by adjusting the proportion of on-line dilution water supplementing and water treatment agent in the mixer H1, the medicine storage tank G1 is a conical bottom, an agent suction inlet 6 is arranged at the joint of the upper edge of the conical bottom and the lower edge of the straight barrel part, a medicine storage tank overflow port 5 is arranged at the upper part of the medicine storage tank G1, and a pipeline for supplementing water through a third water supplementing valve K7 is further arranged in the medicine storage tank G1.
The vertical guide rod L4 is arranged on the medicine storage tank G1, the pressure balancer P1 is fixed with the ferrule 4, the guide rod L4 is sleeved with the ferrule 4, the pressure balancer P1 floats up and down along the guide rod under the action of buoyancy, the lower end of the guide rod L4 is transversely supported, and the pressure balancer P1 is ensured not to slide to the bottom of the medicine storage tank G1. As shown in fig. 2, the pressure balancer P1 has a dual-cavity structure, wherein one cavity is a gas chamber B forming a pontoon, and the other cavity is a water supplementing chamber a, so that the pressure balancer P1 is kept at a constant water head height under the buoyancy action of the gas chamber B, in this embodiment, the overflow port at the upper end of the pressure balancer P1 is approximately level with the upper surface of the water treatment agent solution in the agent storage tank G1, because the pressure balancer is built in the agent storage tank G1, it rises along with the rise of the liquid level in the tank, falls down and falls down, the proportional relationship between online water supplementing and agent at the outlet of the mixer H1 can be stabilized, and the water supplementing proportion of the pressure balancer P1 input into the mixer H1 is ensured not to change along with the solution height in the agent storage tank G1; the water supplementing chamber A is provided with a water inlet 1 and a water outlet 3, the water inlet is connected with a second water supplementing valve K6 through a first flexible pipe L1, and the water outlet 3 is connected with a first metering valve J1 through a second flexible pipe L2; the water supplementing chamber A is also provided with an overflow port 2 to ensure that the liquid level of the water supplementing chamber A is kept at a constant height, and the overflow port 2 is connected with the overflow port 5 of the medicine storage tank by a third flexible pipe L3 and then is sent into a buffer tank G2; the lengths of the first flexible pipe L1, the second flexible pipe L2 and the third flexible pipe L3 are 4/5 of the height of the medicine storage tank G1, so that the up-and-down movement of the pressure balancer P1 and water inflow and outflow are not influenced when the liquid level of the water treatment agent changes.
The buffer tank G2 is connected with a fourth water supplementing valve K8 under the liquid level, the outflow of the solution in the buffer tank G2 is regulated by utilizing the opening of the fourth water supplementing valve K8, the lowest part at the bottom of the medicine storage tank G1 is provided with a pipeline provided with a drain valve K9, the pipeline is communicated with the pipeline of the buffer tank G2 communicated with the fourth water supplementing valve K8 and is also connected to the lower part of the liquid level of the buffer tank G2, and the water treatment medicament after high-power dilution is conveyed to a designated medicine adding port through a pipeline by virtue of the regulating action of the fourth water supplementing valve K8.
The outlet end of the buffer tank G2 is communicated with each appointed dosing port comprising a water supplementing port, a water returning port, a water absorbing well, a water collecting tank and the like of a circulating water system through a pipeline respectively through a first throttling valve K1, a second throttling valve K2, a third throttling valve K3 and a fourth throttling valve K4, and the outlet pipe ends of the appointed dosing ports keep the same horizontal plane which is lower than the liquid level of the buffer tank G2.
The tail end connecting pipe of the metering valve J2 for controlling the delivery quantity of the water treatment medicament is connected with the front position of the water supply pipe outlet, and the water supply pipe outlet is positioned above the buffer tank G2. The water supply pipe connected with the buffer tank G2 adopts a design with a small front part and a large rear part, namely, the connecting pipeline from the buffer tank G2 to the first throttle valve K1, the second throttle valve K2, the third throttle valve K3 and the fourth throttle valve K4 is the front part, and the connecting pipeline from the fourth water supplementing valve K8 to the buffer tank G2 is a water supplementing section, so that overflow is prevented from being caused when solution transportation is blocked.
The upper part of the buffer tank G2 is of an open type or semi-closed type design, and the liquid level of the buffer tank G2 is higher than the outlets of the parts and the tail ends of the conveying pipelines.
The dosing method of the present invention will be described in detail with reference to the dosing system shown in fig. 1:
1. and adding a corresponding amount of water treatment agents into the medicine storage tank G1 according to the parameters such as the water retention amount, the concentration multiple and the like of the circulating water system, and introducing water supplement by opening a valve K7 to dilute the water treatment agents to a specified position.
2. According to the indication value of the water supplementing pipeline pressure meter Y1, the opening degree of the first water supplementing valve K5 is regulated, and the siphon negative pressure at the outlet end of the second metering valve J2 of the water treatment agent conveying pipeline is controlled; when the pressure of the pipe network is large, the water supplementing valve K5 is closed, and conversely, the water supplementing valve K5 is opened to ensure the water flow and the flow velocity in the pipeline below the K5, and the siphon action on the medicament flowing out of the branch pipe is stabilized.
3. The opening degree of the second water supplementing valve K6 is regulated, so that the pressure balancer is kept in an overflow state, the opening degree of the first metering valve J1 is regulated, and the proportion of the on-line dilution water supplementing agent and the water treatment agent in the mixer H1 is regulated to control the adding time of the water treatment agent in the medicine storage tank G1.
4. The fourth water supplementing valve K8 connected with the buffer tank G2 is opened, the outflow amount of the solution in the buffer tank G2 is increased, and the water treatment agent after high-power dilution is conveyed to the appointed dosing port through a pipeline.
5. According to the actual conditions of all the dosing ports of the system, the dosing quantity of the water treatment agent of each dosing port of one or a plurality of points such as a water supplementing port, a water return port, a water absorbing well, a water collecting tank and the like is controlled by adjusting the opening degree of a first throttling valve K1, a second throttling valve K2, a third throttling valve K3 and a fourth throttling valve K4 at the outlet end of the agent conveying pipe.
6. When the sediment is found at the bottom of the medicine storage tank G1, a blow-down valve K9 is opened, and the medicine storage tank G1 is washed by water to clean the sediment, so that the sediment is prevented from blocking a pipeline.
The water treatment agent can be subjected to multistage dilution and uniform mixing before entering the system, so that the dispersibility and transmissibility of the agent are improved; the main body of the dosing device is not limited by space, a proper placement point can be selected according to the site situation, and the water treatment agent can be remotely conveyed and fed through the water flow carrier function.
The invention is adopted for a set of industrial circulating cooling system with water conservation quantity of 10000 cubic meters, circulation quantity of 20000 cubic meters per hour and concentration multiple of about 2.5. According to the water quality index control requirement, 240 kg of corrosion and scale inhibitor is required to be added every day, and according to the invention, a medicine storage tank with the volume of 0.5 cubic meter, a buffer tank with the volume of 0.02 cubic meter, other matched pipelines, valves and the like are adopted. Firstly, 240 kg of corrosion and scale inhibitor is added into a medicine storage tank, a third water supplementing valve K7 is opened, water is added to dilute the medicine storage tank to a set liquid level, a first water supplementing valve K5 above a buffer tank is opened to form a certain siphon force, and the flow of each medicine input port of the system is regulated according to actual conditions to ensure that medicines are uniformly added into the system in a multi-point mode for 24 hours by regulating the heights of a medicine outlet, an online water supplementing first metering valve J1 and an online water supplementing pressure balancer 7 because the pressure balancer is built in the medicine storage tank G1 and rises along with the rising of the liquid level in the tank and falls down, so that the proportion relation between online water supplementing and medicines at the outlet of the mixer H1 is stabilized. The device is used and operated on site for 6 months, the medicament is convenient and effective to dose, and compared with the traditional dosing mode, the device saves the dosage of the water treatment agent by more than 15% per month under the condition that the water quality control index of the system is unchanged, and the economic benefit is obvious. Meanwhile, the dosing stability and the dispersion timeliness of the medicament are ensured, and the domestication effect on water quality is improved.
Claims (8)
1. A water control type industrial circulating water dosing method is characterized in that: the method comprises the following steps:
(1) Setting a medicine storage tank (G1) and a buffer tank (G2), wherein the position of the buffer tank (G2) is lower than that of the medicine storage tank (G1); the medicine storage tank (G1) and the buffer tank (G2) are communicated through a pipeline, a mixer (H1) and a second metering valve (J2) are arranged on the pipeline, one inlet end of the mixer is connected with the medicine storage tank (G1), the other inlet end of the mixer is connected with the first metering valve (J1), the outlet end of the mixer (H1) is connected with the second metering valve (J2), the outlet of the second metering valve (J2) is connected with the lower end of a water supplementing pipeline, a structure that the second metering valve (J2) is converged with the lower end of the water supplementing pipeline is formed, liquid in two paths is converged and then sent into the buffer tank (G2), and a first water supplementing valve (K5) is arranged at the upper end of the water supplementing pipeline; under the action of siphon negative pressure and self gravity generated by water flow formed when the first water supplementing valve (K5) is opened to supplement water to the buffer tank, the first metering valve (J1) and the second metering valve (J2) are opened to introduce water supplement in the mixer (H1) in proportion for on-line dilution, and the diluted water treatment agent in the medicine storage tank (G1) flows into the buffer tank (G2) after the water supplement is introduced in the mixer (H1) in proportion through the metering valve (J1) is opened for on-line dilution;
(2) The inlet end of the first metering valve (J1) is communicated with a second water supplementing valve (K6), and the adding time of the water treatment agent in the medicine storage tank (G1) is controlled by adjusting the proportion of on-line dilution water supplementing and water treatment agent in the mixer (H1);
(3) When the buffer tank (G2) is replenished with water, the water replenished by a first water replenishing valve (K5) communicated above the buffer tank (G2) is impacted downwards to enter the buffer tank (G2), and water flow at the lower end of a water replenishing pipeline generates siphon negative pressure to send the medicament at the outlet of the mixer (H1) into the buffer tank (G2);
(4) Each specified dosing port is connected with the buffer tank (G2), and the outlet pipe ends of each specified dosing port keep the same horizontal plane which is lower than the liquid level of the buffer tank (G2);
(5) In the step (2) of adjusting online dilution and water supplementing, the water head height of the pressure balancer (P1) is adjusted in a mode of controlling the water head height of the pressure balancer (P1), so that the water head height of the pressure balancer (P1) synchronously changes along with the change of the liquid level of the medicine storage tank (G1), and the adding time of the water treatment agent in the medicine storage tank (G1) is controlled by adjusting the proportion of online dilution and water supplementing and water treatment agent in the mixer (H1).
2. The water-controlled industrial circulating water dosing method of claim 1, wherein: the step of synchronously changing the water head height of the pressure balancer (P1) along with the liquid level height of the medicine storage tank (G1) is as follows: the pressure balancer (P1) is connected with the pontoon, the pontoon and the pressure balancer (7) are placed in the liquid medicine in the medicine storage tank (G1), and the buoyancy of the pontoon synchronously changes the water head height of the pressure balancer (P1) along with the change of the liquid level of the medicine storage tank (G1).
3. The water-controlled industrial circulating water dosing method of claim 1, wherein: the method also comprises the steps of: a fourth water supplementing valve (K8) is connected below the liquid level of the buffer tank (G2), and the outflow of the solution in the buffer tank (G2) is regulated by opening the fourth water supplementing valve (K8), so that the water treatment agent after high-power dilution is conveyed to a designated dosing port through a pipeline.
4. A water-controlled industrial circulating water dosing system for implementing the method of claim 1, characterized by: comprises a medicine storage tank (G1) and a buffer tank (G2), wherein the buffer tank (G2) is lower than the medicine storage tank (G1); the medicine storage tank (G1) is communicated with the buffer tank (G2) through a pipeline, a mixer (H1) and a second metering valve (J2) are arranged on the communicating pipeline, an outlet of the second metering valve (J2) is connected with the lower end of a water supplementing pipeline, the mixed water is fed into the buffer tank (G2), and a first water supplementing valve (K5) is arranged at the upper end of the water supplementing pipeline; one inlet end of the mixer is connected with a medicine storage tank (G1), the other inlet end of the mixer is connected with a first metering valve (J1), and the outlet end of the mixer (H1) is connected with a second metering valve (J2), so that siphonage and self gravity of the medicine and opening degree of the first metering valve (J1) and the second metering valve (J2) are generated when the pipeline where the mixer (H1) is positioned supplements water in the buffer tank, the diluted water treatment agent in the medicine storage tank (G1) is introduced into the mixer (H1) in proportion by opening the metering valve (J1) to perform on-line dilution, and then flows into the buffer tank (G2); the inlet end of the first metering valve (J1) is communicated with a second water supplementing valve (K6), and the adding time of the water treatment agent in the medicine storage tank (G1) is controlled by adjusting the proportion of on-line dilution water supplementing and water treatment agent in the mixer (H1); the upper part of the buffer tank (G2) is connected with a first water supplementing valve (K5) through a pipeline, so that water supplementing fed through the first water supplementing valve (K5) directly impacts the liquid level of the buffer tank (G2); the inlet end of the first metering valve (J1) is communicated with a second water supplementing valve (K6), and the adding time of the water treatment agent in the medicine storage tank (G1) is controlled by adjusting the proportion of on-line dilution water supplementing and water treatment agent in the mixer (H1); the medicine storage tank (G1) is provided with a vertical guide rod, the guide rod is sleeved with the pressure balancer (P1), the pressure balancer (P1) is of a double-cavity structure, one cavity is an air chamber (B) forming a pontoon, and the other cavity is a water supplementing chamber (A), so that the pressure balancer (P1) is kept at a constant water head height under the buoyancy action of the air chamber (B); the water supplementing chamber (A) is provided with a water inlet (1) and a water outlet (3), the water inlet is connected with a second water supplementing valve (K6) through a flexible pipe, and the water outlet (3) is connected with a first metering valve (J1) through a flexible pipe.
5. The water-controlled industrial circulating water dosing system of claim 4, wherein: the water supplementing chamber (A) is also provided with an overflow port (2) so as to ensure that the liquid level of the water supplementing chamber (A) is kept at a constant height.
6. The water-controlled industrial circulating water dosing system of claim 4, wherein: a fourth water supplementing valve (K8) is connected below the liquid level of the buffer tank (G2), and the outflow of the solution in the buffer tank (G2) is regulated by opening the fourth water supplementing valve (K8), so that the water treatment agent after high-power dilution is conveyed to a designated dosing port through a pipeline.
7. The water-controlled industrial circulating water dosing system of claim 4, wherein: the outlet end of the buffer tank (G2) is communicated with each appointed dosing port through a pipeline, and the outlet pipe ends of the appointed dosing ports keep the same horizontal plane which is lower than the liquid level of the buffer tank (G2).
8. The water-controlled industrial circulating water dosing system of claim 4, wherein: the lowest part of the bottom part of the medicine storage tank (G1) is provided with a pipeline provided with a drain valve (K9), and the pipeline is communicated with a pipeline of a fourth water supplementing valve (K8) communicated with the buffer tank (G2) and is connected below the liquid level of the buffer tank (G2).
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