CN216244569U - Concentrated regeneration system of heat source tower antifreeze solution - Google Patents
Concentrated regeneration system of heat source tower antifreeze solution Download PDFInfo
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- CN216244569U CN216244569U CN202122775851.1U CN202122775851U CN216244569U CN 216244569 U CN216244569 U CN 216244569U CN 202122775851 U CN202122775851 U CN 202122775851U CN 216244569 U CN216244569 U CN 216244569U
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Abstract
The utility model discloses a heat source tower anti-freezing solution concentration and regeneration system which comprises a heat source tower heat pump unit, a heat source tower, a dilute solution tank, a concentrated solution tank, a concentration device, a feeding device, a solution circulating pump, a hot water circulating pump, a solution replenishing pump, a system solution concentration detection device, a concentrated solution tank concentration detection device, a dilute solution tank liquid level meter, a concentrated solution tank liquid level meter, a dilute solution tank water inlet electric valve a, a concentration device water inlet electric valve b, a concentration device water outlet electric valve c, a concentrated solution tank water inlet electric valve d, a concentrated solution tank water outlet electric valve e, a liquid supplementing cutoff valve f, a feeding device water inlet valve g, a feeding device water outlet valve h and a feeding device water supplementing valve m. The utility model reduces the discharge of the system after the water absorption volume is increased, realizes the automation of the system, effectively ensures the solution concentration and the stable operation of the system, and is suitable for being popularized and applied in heat supply projects of heat source towers.
Description
Technical Field
The utility model relates to the technical field of heat source tower heat pumps, in particular to a heat source tower anti-freezing solution concentration and regeneration system.
Background
At present, a heat source tower heat pump system is widely adopted in parts of southern areas in China as a winter heating heat source, but because the anti-freezing solution of the heat source tower heat pump system can absorb moisture in the air, particularly in rainy areas in winter, the water absorption capacity of the solution is large, the concentration of the solution becomes low after the solution absorbs water, the freezing point of the solution rises, and meanwhile, the volume of the solution is increased, so that adverse effects are caused on the operation of the system. The traditional solution method is to discharge increased solution and manually add antifreeze working medium, which not only causes solution waste and working medium cost increase, but also can cause environmental pollution.
At present, an antifreezing solution concentration and regeneration device is already available on the market, but a complete antifreezing solution concentration and regeneration control system and a control method are not available.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems and provides a heat source tower anti-freezing solution concentration and regeneration system by utilizing a heat source tower heat pump technology.
In order to achieve the purpose, the utility model provides a heat source tower anti-freezing solution concentration regeneration system which comprises a heat source tower heat pump unit 1, a heat source tower 2, a dilute solution tank 3, a concentrated solution tank 4, a concentration device 5, a feeding device 6, a solution circulating pump 7, a hot water circulating pump 8, a solution replenishing pump 9, a system solution concentration detection device 10, a concentrated solution tank concentration detection device 11, a dilute solution tank liquid level meter 12, a concentrated solution tank liquid level meter 13, a dilute solution tank water inlet electric valve a, a concentration device water inlet electric valve b, a concentration device water outlet electric valve c, a concentrated solution tank water inlet electric valve d, a concentrated solution tank water outlet electric valve e, a liquid replenishing cut-off valve (normally open) f, a feeding device water inlet valve (normally closed) g, a feeding device water outlet valve (normally closed) h and a feeding device water replenishing valve (normally closed) m.
The water outlet of the evaporator of the heat source tower heat pump unit 1 is connected with one end of a solution water supply pipe, the other end of the solution water supply pipe is connected with the water inlet of the heat source tower 2, the water outlet of the heat source tower 2 is connected with one end of a solution return pipe, the other end of the solution return pipe is connected with the water inlet of a solution circulating pump 7, and the water outlet of the solution circulating pump 7 is connected with the water inlet of the evaporator of the heat source tower heat pump unit 1. The water outlet of the condenser of the heat source tower heat pump unit 1 is connected with one end of a water supply pipe, the water inlet of the condenser of the heat source tower heat pump unit 1 is connected with the water outlet of a hot water circulating pump 8, and the water inlet of the hot water circulating pump 8 is connected with one end of a water return pipe.
The overflow port of the heat source tower 2 is connected to one end of a dilute solution tank water inlet electric valve a, and the other end of the dilute solution tank water inlet electric valve a is connected with the water inlet of the dilute solution tank 3. The water outlet of the dilute solution tank 3 is connected with one end of a water inlet electric valve b of the concentration device, and the other end of the water inlet electric valve b of the concentration device is connected with the water inlet of the concentration device 5. The water outlet of the concentration device 5 is respectively connected with one end of a water outlet electric valve c of the concentration device and one end of a water inlet electric valve d of the concentrated solution tank, and the other end of the water outlet electric valve c of the concentration device is connected with the water inlet of the solution circulating pump 7. The other end of concentrated solution case motorised valve d that intakes is connected with the water inlet of concentrated solution case 4, and the delivery port of concentrated solution case 4 is connected with the one end of concentrated solution case water outlet motorised valve e, and the other end of concentrated solution case water outlet motorised valve e is connected with the water inlet of solution supplementary pump 9, and the delivery port of solution supplementary pump 9 is connected with the one end of fluid infusion shut-off valve (normally open) f, and the other end of fluid infusion shut-off valve (normally open) f is connected with the water inlet of solution circulating pump 7.
The water inlet of the feeding device 6 is connected with one end of a feeding device water inlet valve (normally closed) g, the other end of the feeding device water inlet valve (normally closed) g is connected to a solution water supply pipe, the water outlet of the feeding device 6 is connected with one end of a feeding device water outlet valve (normally closed) h, and the other end of the feeding device water outlet valve (normally closed) h is connected with the water inlet of the solution replenishing pump 9.
The tap water replenishing pipe is connected with one end of a water replenishing valve (normally closed) m of the feeding device, and the other end of the water replenishing valve (normally closed) m of the feeding device is connected with a water replenishing port of the feeding device 6.
The water inlet of the system solution concentration detection device 10 is connected with the upstream pipe section of the solution return pipe, and the water outlet of the system solution concentration detection device 10 is connected with the downstream pipe section of the solution return pipe.
The water inlet of the concentrated solution tank concentration detection device 11 is connected to the detection solution outlet of the concentrated solution tank 4, and the water outlet of the concentrated solution tank concentration detection device 11 is connected to the detection solution inlet of the concentrated solution tank 4.
The dilute solution tank liquid level meter 12 is positioned in the dilute solution tank 3, and the concentrated solution tank liquid level meter 13 is positioned in the concentrated solution tank 4.
Further, the water inlet of the solution supplementing pump 9 is also connected with one end of a solution recovery valve (normally closed) i, and the other end of the solution recovery valve (normally closed) i is connected to a solution return pipe.
Further, the water outlet of the solution supplementing pump 9 is connected with one end of a dilute solution tank liquid collecting valve (normally closed) j and one end of a concentrated solution tank liquid collecting valve (normally closed) k respectively, the other end of the dilute solution tank liquid collecting valve (normally closed) j is connected to a liquid return port of the dilute solution tank 3, and the other end of the concentrated solution tank liquid collecting valve (normally closed) k is connected to a liquid return port of the concentrated solution tank 4.
The utility model has the beneficial effects that:
(1) the automatic concentration, regeneration and supplement processes of the system anti-freezing solution are realized through the concentration device, the concentrated solution tank, the dilute solution tank, the feeding device, the concentration detection device, the solution supplement pump and each regulating valve, the consumption cost and the labor cost of the anti-freezing agent working medium are reduced, the discharge amount of the system after the water absorption volume is increased is reduced, the automation of the system is realized, the concentration and the stable operation of the system solution are effectively ensured, and the phenomenon that the solution is frozen to damage equipment is prevented;
(2) the concentration and regeneration system of the anti-freezing solution is accurately and timely controlled, the concentration of the solution in the system and the concentration solution in the concentrated solution box is detected in real time through the concentration detection device, and the condition of the solution in the system is accurately mastered;
(3) the system is simple and convenient to operate, small in occupied area, low in initial investment and operation cost and very suitable for being popularized and applied in heat supply projects of the heat source tower.
Drawings
FIG. 1 is a schematic diagram of a heat source tower antifreeze solution concentration and regeneration system of the present invention.
Detailed Description
The utility model will be described in detail below with reference to the accompanying drawings and specific examples, which are illustrative of the utility model, and the scope of the utility model is not limited to the examples described below.
Referring to fig. 1, the utility model provides a heat source tower antifreeze solution concentration and regeneration system, which can be divided into six operation modes, wherein the specific working flow of each operation mode is as follows:
first, concentration regeneration mode of concentration device
In the operation process of the heat source tower heat pump system, the moisture absorption amount of the system anti-freezing solution is not large, the solution treatment amount of the concentration device 5 can meet the concentration load of the system solution, and at the moment, the concentration device 5 can be independently adopted to concentrate and regenerate the system anti-freezing solution, so that the concentration of the system solution can be recovered to a normal level.
When the system is in the mode, the dilute solution tank water inlet electric valve a and the concentration device water inlet electric valve b are opened. When the system solution absorbs water, the concentration of the solution is reduced, the volume is increased, the dilute solution in the heat source tower 2 overflows into the dilute solution tank 3 through the overflow port, and the dilute solution in the dilute solution tank 3 enters the concentration device 5 through the water outlet.
When the system solution concentration detection device 10 detects that the system solution concentration is reduced to a low limit value or the dilute solution tank liquid level meter 12 detects that the liquid level of the dilute solution tank 3 reaches a high limit value, the water outlet electric valve c of the concentration device is opened, and the concentration device 5 is started to concentrate and regenerate the solution. In the concentration device 5, the liquid water in the dilute solution is evaporated and then condensed, and finally discharged through the condensate pipe. The dilute solution is changed into concentrated solution after concentration and regeneration, and the concentrated solution is supplemented from the water inlet of the solution circulating pump 7 and enters the solution circulating system, so that the concentration of the solution in the system is improved.
In the process of solution concentration and regeneration, when the liquid level of the dilute solution tank 3 is above the low limit value, and the liquid level of the concentrated solution tank 4 is detected by the liquid level meter 13 to be lower than the high limit value, and the concentration of the system solution rises to the high limit value, the water outlet electric valve c of the concentration device is closed, the water inlet electric valve d of the concentrated solution tank is opened, and the concentrated solution concentrated and regenerated by the concentration device 5 is stored in the concentrated solution tank 4. And when the liquid level of the concentrated solution tank 4 reaches a high limit value, closing the water inlet electric valve d of the concentrated solution tank, closing the water outlet electric valve c of the concentration device again, and continuously supplementing the concentrated solution concentrated and regenerated by the concentration device 5 into the solution circulating system.
And when the liquid level of the dilute solution tank 3 is reduced to a low limit value, closing the concentration device 5, the dilute solution tank water inlet electric valve a, the concentration device water inlet electric valve b, the concentration device water outlet electric valve c and the concentrated solution tank water inlet electric valve d.
Concentration liquid supplementing mode of concentration device and concentrated solution tank
When raining or outdoor air humidity is high, moisture absorption capacity of the system anti-freezing solution is high, solution treatment capacity of the concentration device 5 cannot meet concentration load of the system solution, and the concentration of the system solution is continuously reduced after a concentration regeneration mode of the concentration device is adopted. If the liquid level of the concentrated solution tank 4 is above the low limit value and the concentrated solution tank concentration detection device 11 detects that the solution concentration in the concentrated solution tank 4 is higher than the solution concentration of the current system, the concentration device 5 and the concentrated solution tank 4 can be simultaneously adopted to concentrate, regenerate and supplement the anti-freezing solution of the system.
When the system is in the mode, the dilute solution tank water inlet electric valve a, the concentration device water inlet electric valve b, the concentration device water outlet electric valve c, the concentrated solution tank water outlet electric valve e and the liquid supplementing stop valve (normally open) f are opened, and the concentration device 5 and the solution supplementing pump 9 are started.
The concentration and regeneration liquid supplementing process of the concentration device 5 is the same as the concentration and regeneration mode of the concentration device.
The concentrated solution in the concentrated solution tank 4 is pressurized by the solution replenishing pump 9 and then mixed with the concentrated solution concentrated and regenerated by the concentration device 5, and the mixed concentrated solution is replenished from the water inlet of the solution circulating pump 7 and enters the solution circulating system, so that the concentration of the solution in the system is improved.
And when the concentration of the solution in the system rises to a high limit value, closing the solution replenishing pump 9 and the water outlet electric valve e of the concentrated solution tank, and stopping replenishing the concentrated solution to the system through the concentrated solution tank 4.
Concentration liquid supplementing mode of concentration device and feeding device
When the moisture absorption amount of the system anti-freezing solution is large, the solution treatment amount of the concentration device 5 cannot meet the concentration load of the system solution, and the concentration of the system solution is continuously reduced after the concentration regeneration mode of the concentration device is adopted. If the liquid level of the concentrated solution tank 4 is not higher than the lower limit value, the concentration device 5 and the feeding device 6 can be simultaneously adopted to concentrate, regenerate and supplement the system antifreeze solution.
When the system is in the mode, the dilute solution tank water inlet electric valve a, the concentration device water inlet electric valve b, the concentration device water outlet electric valve c and the liquid supplementing cut-off valve (normally open) f are opened, and the concentration device 5 is started.
The concentration and regeneration liquid supplementing process of the concentration device 5 is the same as the concentration and regeneration mode of the concentration device.
And opening a water inlet valve (normally closed) g of the feeding device, enabling the dilute solution in the system to enter the feeding device 6 by utilizing the residual pressure of the solution water supply side, and closing the water inlet valve (normally closed) g of the feeding device when the dilute solution in the feeding device 6 rises to a certain liquid level. Then adding a proper amount of anti-freezing working medium into the feeding device 6, and forming a concentrated solution after the anti-freezing working medium and the dilute solution are uniformly stirred and fully mixed. And opening a water outlet valve (normally closed) h of the feeding device, starting the solution supplementing pump 9, pressurizing the concentrated solution in the feeding device 6 by the solution supplementing pump 9, mixing the concentrated solution with the concentrated solution concentrated and regenerated by the concentration device 5, and supplementing the mixed concentrated solution into the solution circulating system from a water inlet of the solution circulating pump 7 to improve the concentration of the solution in the system.
After the concentrated solution in the feeding device 6 is completely supplemented into the solution circulating system, the concentration of the solution in the system is still below the low limit value, the solution supplementing pump 9 and the water outlet valve (normally closed) of the feeding device are closed, and the process of supplementing the concentrated solution to the system by using the feeding device 6 is repeated until the concentration of the solution in the system is increased to the high limit value.
Four, concentrated solution tank fluid infusion mode
When the system solution concentration detection device 10 detects that the concentration of the system solution is reduced to be below the low limit value, the concentration device 5 cannot operate due to faults and the like, if the liquid level of the concentrated solution tank 4 is above the low limit value, and the concentrated solution tank concentration detection device 11 detects that the concentration of the solution in the concentrated solution tank 4 is higher than the current system solution concentration, the concentrated solution tank 4 can be adopted to supplement the concentrated solution to the system.
When the system is in the mode, the water outlet electric valve e and the liquid supplementing stop valve (normally open) f of the concentrated solution tank are opened, and the solution supplementing pump 9 is started. After being pressurized by the solution replenishing pump 9, the concentrated solution in the concentrated solution tank 4 is replenished from the water inlet of the solution circulating pump 7 and enters the solution circulating system, so that the concentration of the solution in the system is improved.
And when the concentration of the solution in the system rises to a high limit value or the liquid level of the concentrated solution tank 4 falls to a low limit value, closing the solution supplementing pump 9 and the electric valve e for discharging water from the concentrated solution tank, and stopping supplementing the concentrated solution to the system through the concentrated solution tank 4.
Liquid supplementing mode of feeding device
When the concentration of the solution in the system is reduced to a low limit value, the concentration device 5 cannot operate due to reasons such as faults and the like, and the liquid level of the concentrated solution tank 4 is not higher than the low limit value, the feeding device 6 can be adopted to supplement the concentrated solution to the system.
The process of independently supplementing the concentrated solution to the system by using the feeding device 6 is the same as the liquid supplementing process of the feeding device 6 in the concentrating and liquid supplementing mode of the concentrating device and the feeding device.
When the dilute solution cannot be supplied to the feeding device 6 due to the reasons that the amount of the system solution is small or the feeding device water inlet valve (normally closed) g cannot be opened after failure and the like, the water supply valve (normally closed) m of the feeding device is opened, and tap water is injected into the feeding device 6 to replace the system dilute solution of the feeding device 6 in a feeding device solution supplying mode or a concentration device and feeding device concentration solution supplying mode.
Sixth, solution recovery mode
After the heat supply is finished in winter, the solution in the system can be quickly recovered to the dilute solution tank 3 and the concentrated solution tank 4 by using the solution replenishing pump 9.
When the system is in this mode, the solution replenishing block valve (normally open) f is closed, the solution recovery valve (normally closed) i and the dilute solution tank liquid recovery valve (normally closed) j are opened, and the solution replenishing pump 9 is started. The solution in the system is pressurized by a solution replenishing pump 9 and then is preferentially and quickly recycled to the dilute solution tank 3. When the liquid level in the dilute solution tank 3 reaches a high limit value, a concentrated solution tank liquid receiving valve (normally closed) k is opened, and a dilute solution tank liquid receiving valve (normally closed) j is closed, so that the system solution is recovered into the concentrated solution tank 4 until the liquid level in the concentrated solution tank 4 reaches the high limit value or the system solution is completely recovered.
Claims (7)
1. The utility model provides a concentrated regeneration system of heat source tower antifreeze solution which characterized in that: the water outlet of an evaporator of the heat source tower heat pump unit (1) is connected with one end of a solution water supply pipe, the other end of the solution water supply pipe is connected with the water inlet of the heat source tower (2), the water outlet of the heat source tower (2) is connected with one end of a solution return pipe, the other end of the solution return pipe is connected with the water inlet of a solution circulating pump (7), and the water outlet of the solution circulating pump (7) is connected with the water inlet of the evaporator of the heat source tower heat pump unit (1); a water outlet of a condenser of the heat source tower heat pump unit (1) is connected with one end of a water supply pipe, a water inlet of the condenser of the heat source tower heat pump unit (1) is connected with a water outlet of a hot water circulating pump (8), and a water inlet of the hot water circulating pump (8) is connected with one end of a water return pipe;
an overflow port of the heat source tower (2) is connected to one end of a dilute solution tank water inlet electric valve a, and the other end of the dilute solution tank water inlet electric valve a is connected with a water inlet of the dilute solution tank (3); the water outlet of the dilute solution tank (3) is connected with one end of a water inlet electric valve b of the concentration device, and the other end of the water inlet electric valve b of the concentration device is connected with the water inlet of the concentration device (5); the water outlet of the concentration device (5) is respectively connected with one end of a water outlet electric valve c of the concentration device and one end of a water inlet electric valve d of the concentrated solution tank, and the other end of the water outlet electric valve c of the concentration device is connected with the water inlet of a solution circulating pump (7); the other end of the concentrated solution tank water inlet electric valve d is connected with a water inlet of the concentrated solution tank (4), a water outlet of the concentrated solution tank (4) is connected with one end of a concentrated solution tank water outlet electric valve e, the other end of the concentrated solution tank water outlet electric valve e is connected with a water inlet of a solution supplementing pump (9), a water outlet of the solution supplementing pump (9) is connected with one end of a liquid supplementing cut-off valve f, and the other end of the liquid supplementing cut-off valve f is connected with a water inlet of a solution circulating pump (7);
the water inlet of the feeding device (6) is connected with one end of a water inlet valve g of the feeding device, the other end of the water inlet valve g of the feeding device is connected to a solution water supply pipe, the water outlet of the feeding device (6) is connected with one end of a water outlet valve h of the feeding device, and the other end of the water outlet valve h of the feeding device is connected with the water inlet of a solution supplementing pump (9).
2. The system of claim 1, wherein the system comprises: the tap water replenishing pipe is connected with one end of a water replenishing valve m of the feeding device, and the other end of the water replenishing valve m of the feeding device is connected with a water replenishing port of the feeding device (6).
3. The system of claim 1, wherein the system comprises: the water inlet of the system solution concentration detection device (10) is connected with the upstream pipe section of the solution return pipe, and the water outlet of the system solution concentration detection device (10) is connected with the downstream pipe section of the solution return pipe.
4. The system of claim 1, wherein the system comprises: the water inlet of the concentrated solution box concentration detection device (11) is connected to the detection solution outlet of the concentrated solution box (4), and the water outlet of the concentrated solution box concentration detection device (11) is connected to the detection solution inlet of the concentrated solution box (4).
5. The system of claim 1, wherein the system comprises: the dilute solution tank liquid level meter (12) is positioned in the dilute solution tank (3), and the concentrated solution tank liquid level meter (13) is positioned in the concentrated solution tank (4).
6. The system of claim 1, wherein the system comprises: the water inlet of the solution supplementing pump (9) is also connected with one end of a solution recovery valve i, and the other end of the solution recovery valve i is connected to a solution return pipe.
7. The system of claim 1, wherein the system comprises: the water outlet of the solution supplementing pump (9) is connected with one end of a liquid collecting valve j of the dilute solution tank and one end of a liquid collecting valve k of the concentrated solution tank respectively, the other end of the liquid collecting valve j of the dilute solution tank is connected to a liquid return port of the dilute solution tank (3), and the other end of the liquid collecting valve k of the concentrated solution tank is connected to a liquid return port of the concentrated solution tank (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122775851.1U CN216244569U (en) | 2021-11-14 | 2021-11-14 | Concentrated regeneration system of heat source tower antifreeze solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202122775851.1U CN216244569U (en) | 2021-11-14 | 2021-11-14 | Concentrated regeneration system of heat source tower antifreeze solution |
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| CN216244569U true CN216244569U (en) | 2022-04-08 |
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| CN202122775851.1U Active CN216244569U (en) | 2021-11-14 | 2021-11-14 | Concentrated regeneration system of heat source tower antifreeze solution |
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