CN212222502U

CN212222502U - Device for controlling stability of outlet water temperature of raw water heater

Info

Publication number: CN212222502U
Application number: CN201922205978.2U
Authority: CN
Inventors: 李雪
Original assignee: Datang Taizhou Thermoelectricity Co ltd
Current assignee: Datang Taizhou Thermoelectricity Co ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-12-25
Anticipated expiration: 2029-12-10

Abstract

The utility model discloses a device that control raw water heater leaving water temperature is stable, including raw water heater and ultrafiltration device, still include at least one heat-retaining unit, heat-retaining unit and raw water heater intercommunication, and heat-retaining unit and ultrafiltration device intercommunication, the heat-retaining unit includes at least one heat storage water tank, is connected with first regulating unit, second regulating unit and third regulating unit on the heat storage water tank. The utility model discloses a heat storage water tank cushions, when ultrafiltration device carries out the backwash, ultrafiltration device inlet water main pipe's discharge reduces, but the raw water heater keeps former flow operation, and ultrafiltration intake temperature is invariable during the backwash, has guaranteed ultrafiltration reverse osmosis device's high-efficient operation, and unnecessary hot water storage is in heat storage water tank simultaneously, accessible adjusting unit discharges; in addition, when the raw water heater is shut down, the hot water storage tank is used for buffering, and even if the steam inlet valve of the raw water heater is delayed to be closed, the ultrafiltration inlet water temperature is not too high, so that the ultrafiltration membrane is prevented from being scalded.

Description

Device for controlling stability of outlet water temperature of raw water heater

Technical Field

The utility model belongs to water treatment temperature control device, specifically speaking relates to a device that control raw water heater leaving water temperature is stable.

Background

At present, most of the make-up water of the power plant boiler is subjected to ultrafiltration reverse osmosis treatment so as to reduce the burden of subsequent desalting equipment. Because the work efficiency of the ultrafiltration reverse osmosis device is greatly influenced by the temperature of inlet water, particularly in winter, the water temperature is only about 5 ℃, so that the viscosity of water is increased, the water flux of the ultrafiltration reverse osmosis membrane is reduced, the water yield is reduced, and the requirement of boiler make-up water is difficult to meet, therefore, a raw water heating system is generally used for heating the inlet water.

Because the ultrafiltration device is in operation, backwashing is required to be carried out every 30-60 minutes, water inlet of a single set of ultrafiltration device is interrupted, the water flow of the raw water heater is reduced or zero, in order to ensure constant water outlet temperature of the raw water heater, the steam inlet valve is closed, after backwashing is finished, the water flow is increased, and the steam valve is opened. However, the steam inlet valve is lagged in action and difficult to completely close due to high heating steam pressure and high temperature, so that the outlet water temperature of the raw water heater is too high, and the ultrafiltration membrane is scalded by the overhigh inlet water temperature after the ultrafiltration backwashing is finished. The existing solution is to replace a reliable electric control valve, adjust the temperature control and regulation logic or change the position of a raw water heater to the position behind an ultrafiltration device and in front of a reverse osmosis device, but the problem cannot be completely solved. The more reliable electric valve is replaced, so that the opening degree can be timely and accurately adjusted or the steam inlet can be completely cut off when needed every time in long-term operation, and equipment can be damaged once steam leaks. The change raw water heater position needs to carry out great change to equipment to not only reverse osmosis equipment has the requirement to the temperature of intaking, ultrafiltration device's operating efficiency receives the temperature influence equally, changes raw water heater position and can not realize the maximize of system water efficiency.

In view of this, the present invention is provided.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in overcoming the not enough of prior art, provides a device that control raw water heater leaving water temperature is stable for solve above-mentioned technical problem.

In order to solve the technical problem, the utility model adopts the following basic concept:

the device for controlling the stability of the outlet water temperature of the raw water heater comprises the raw water heater, an ultrafiltration device and at least one heat storage unit, wherein a water inlet pipe of the heat storage unit is communicated with a water outlet pipe of the raw water heater, and a water outlet pipe of the heat storage unit is communicated with a water inlet pipe of the ultrafiltration device.

Further, the heat storage unit includes at least one heat storage water tank, be connected with first regulating unit, second regulating unit and third regulating unit on the heat storage water tank, the inlet tube of heat storage water tank with raw water heater's outlet pipe intercommunication, and this heat storage water tank's outlet pipe with ultrafiltration device's inlet tube intercommunication.

Further, first regulating unit includes level sensor and chemical water tank, level sensor sets up in the heat storage water tank, the inlet tube in chemical water tank with the outlet pipe intercommunication in heat storage water tank.

Furthermore, a water delivery pump communicated with a water outlet pipe of the heat storage water tank is arranged on a water inlet pipe of the ultrafiltration device.

Furthermore, a water inlet pipe of the chemical water tank is provided with a drainage pump communicated with a water outlet pipe of the heat storage water tank.

Furthermore, the second regulating unit is including setting up the overflow valve on heat storage water tank's upper portion and with the end row valve that heat storage water tank bottom is connected, the outlet pipe of overflow valve and the outlet pipe end of end row valve all are connected with first flourishing water receptacle.

Furthermore, the third regulating unit comprises a water delivery pipe arranged between the water inlet pipe of the heat storage water tank and the water outlet pipe of the raw water heater, a bypass drain pipe is arranged on the water delivery pipe, a drain valve and a flow regulating valve are arranged on the bypass drain pipe, and the water outlet end of the bypass drain pipe is connected with the second water container.

Furthermore, the water outlet pipe of the heat storage water tank is respectively communicated with the water inlet pipe of the ultrafiltration device and the water inlet pipe of the chemical water tank through a tee joint.

Further, be provided with first valve on heat storage water tank's the outlet pipe, be provided with on ultrafiltration device's the inlet tube and be located the second valve in water delivery pump the place ahead, be provided with on the inlet tube in chemical pond and be located the third valve in drain pump the place ahead, first valve the second valve and the third valve is the butterfly valve.

Furthermore, the water inlet end of the raw water heater is respectively connected with a heating steam pipe and an industrial water pipe through pipelines, and the water inlet end of the industrial water pipe is communicated with the water inlet pipe of the ultrafiltration device through a pipeline.

After the technical scheme is adopted, compared with the prior art, the utility model following beneficial effect has: the utility model discloses a heat storage water tank cushions, when ultrafiltration device carries out the backwash, reduces ultrafiltration device main water pipe's discharge of intaking, nevertheless gives birth to the water heater and keeps former flow operation, and ultrafiltration intake temperature is invariable during the backwash, has guaranteed ultrafiltration reverse osmosis unit's high-efficient operation, and unnecessary hot water storage is in heat storage water tank simultaneously, accessible drainage pump sending to chemical pool reuse. In addition, the utility model discloses when raw water heater outage, cushion through the heat storage water tank, even raw water heater admission valve closes the hysteresis, can not cause the ultrafiltration inflow too high temperature yet to avoid scalding the milipore filter.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, 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 without undue limitation. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

fig. 1 is a schematic structural diagram of the device for controlling the outlet water temperature of the raw water heater to be stable.

In the figure:

1. a raw water heater; 2. a heat storage water tank; 3. a delivery water pump; 4. draining pump; 5. an ultrafiltration device; 6. a chemical water pool; 7. an overflow valve; 8. a bottom discharge valve; 9. a first water container; 10. a first valve; 11. a second valve; 12. a third valve; 13. a water delivery pipe; 14. a bypass drain pipe; 15. a drain valve; 16. a flow regulating valve; 17. a second water container; 18. heating a steam pipe; 19. an industrial water pipe; 20. a heat storage unit.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept by those skilled in the art with reference to specific embodiments.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments, and the following embodiments are used for illustrating the present invention, but do not limit the scope of the present invention.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted" and "connected" are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be in mechanical communication; the communication can be direct or indirect through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, descriptions in the present application as to "first", "second", "third", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 1, the utility model provides a device that control raw water heater leaving water temperature is stable, including raw water heater 1 and ultrafiltration device 5, it is unusual, still include at least one heat-retaining unit 20, the inlet tube of heat-retaining unit 20 with raw water heater 1's outlet pipe intercommunication, and this heat-retaining unit 20's outlet pipe with ultrafiltration device 5's inlet tube intercommunication. Wherein, heat-retaining unit 20 includes at least one heat storage water tank 2, the inlet tube of heat storage water tank 2 with the outlet pipe intercommunication of raw water heater 1, the quantity and the size of heat storage water tank 2 can be set for according to actual conditions, do not do specific restriction here. The water outlet pipe of the heat storage water tank 2 is communicated with the water inlet pipe of the ultrafiltration device 5, and the heat storage water tank 2 is connected with a first adjusting unit, a second adjusting unit and a third adjusting unit so as to keep the liquid in the heat storage water tank 2 constant.

Specifically, when the ultrafiltration device 5 performs backwashing, the flow rate of water fed from the heat storage water tank 2 to the water inlet pipe of the ultrafiltration device 5 is reduced, but the raw water heater 1 keeps the original flow rate running, redundant hot water is stored in the heat storage water tank 2 during backwashing, and after the water level of the heat storage water tank 2 rises to a certain liquid level, the water level in the heat storage water tank 2 is maintained within a certain range by the first adjusting unit, the second adjusting unit and the third adjusting unit which are connected to the heat storage water tank 2. Because the water yield of the raw water heater 1 is basically unchanged during backwashing of the ultrafiltration device 2, the steam inlet flow of the raw water heater 1 is not required to be adjusted, and meanwhile, water in the heat storage water tank 2 is used as buffer, so that the water inlet temperature of the ultrafiltration device is not too high even if the steam inlet valve of the raw water heater 1 is delayed or not closed tightly, the ultrafiltration membrane is prevented from being scalded, and the service life of treatment equipment is prolonged.

Example one

As shown in fig. 1, in this embodiment, which is a further limitation of the foregoing embodiment, the first adjusting unit includes a chemical water tank 6, an inlet pipe of the chemical water tank 6 is communicated with an outlet pipe of the hot water storage tank 2, and an outlet pipe of the hot water storage tank 2 is communicated with an inlet pipe of the ultrafiltration device 5. In order to more accurately control and detect the water level in the heat storage water tank 2, a liquid level sensor (not shown in the figure) for detecting the liquid level is further arranged in the heat storage water tank 2. Further, a water delivery pump 3 communicated with a water outlet pipe of the heat storage water tank 2 is arranged on a water inlet pipe of the ultrafiltration device 5; furthermore, a water inlet pipe of the chemical water tank 6 is provided with a drainage pump 4 communicated with a water outlet pipe of the heat storage water tank 2.

Preferably, the water outlet pipe of the heat storage water tank 2 is respectively communicated with the water inlet pipe of the ultrafiltration device 5 and the water inlet pipe of the chemical water tank 6 through a tee joint.

In addition, be provided with first valve 10 on the outlet pipe of heat storage water tank 2, be provided with on ultrafiltration device 5's the inlet tube and be located the second valve 11 in 3 the place ahead of water delivery pump, be provided with on the inlet tube of chemical water pond 6 and be located the third valve 12 in 4 the place ahead of drain pump, first valve 10 second valve 11 and third valve 12 is the butterfly valve, realizes fluidic stability control, for example, when the water level in heat storage water tank 2 is higher than or is less than certain liquid level, can control the liquid level in the heat storage water tank 2 through the flow of adjusting valve.

When using this device, the hot water that raw water heater 1 constant flow operation produced enters into heat storage water tank 2 through raceway 13, and heat storage water tank 2 stores constant temperature hot water as buffer tank, sends to ultrafiltration device 5 through conveying water pump 3 and advances the main pipe, guarantees ultrafiltration device 5 high efficiency operation. When the ultrafiltration device 5 is used for backwashing, the flow of the water inlet main pipe is reduced, the water level in the heat storage water tank 2 rises, after the water level reaches a certain liquid level, the drainage pump 4 is started, redundant hot water is drained to the chemical water tank 6 for reuse, and the water level of the heat storage water tank 2 is maintained within a certain range. When the ultrafiltration device 5 is backwashed, the water flow sent from the heat storage water tank 2 to the inlet of the ultrafiltration device 5 is reduced, but the raw water heater 1 keeps running at the original flow, redundant hot water is stored in the heat storage water tank 2 during backwashing, after the water level of the heat storage water tank 2 rises to a certain liquid level, the hot water in the heat storage water tank 2 is sent to the chemical water tank 6 through the drainage pump 4 for recycling, so that the water level in the heat storage water tank 2 is maintained within a certain range. For the liquid level of more accurate control play hot water tank 2, be provided with level sensor in the heat storage water tank 2 to make the water level rise in the heat storage water tank 2 and reach certain liquid level after, through starting drain pump 4, arrange unnecessary part hot water to chemical water pool 6 and multiplex. In addition, water in the heat storage water tank 2 is used as buffering, and even if the regulation of an air inlet valve of the raw water heater 1 is delayed or not closed tightly, the water inlet temperature of the ultrafiltration device 5 is not too high, so that the ultrafiltration membrane is prevented from being scalded.

Example one

As shown in fig. 1, in this embodiment, which is a further limitation of the foregoing embodiment, the second adjusting unit includes an overflow valve 7 disposed on the upper portion of the heat storage water tank 2 and a bottom drain valve 8 connected to the bottom of the heat storage water tank 2, and a first water container 9 is connected to both ends of a water outlet pipe of the overflow valve 7 and a water outlet pipe of the bottom drain valve 8. By arranging the overflow valve 7 at the upper part of the heat storage water tank 2 and connecting the bottom drain valve 8 at the bottom of the heat storage water tank 2, even if the first adjusting unit fails, the water level in the heat storage water tank 2 can be kept within a certain range by controlling the overflow valve 7 and/or the bottom drain valve 8 to be opened and closed. In addition, the second regulating unit can be used in cooperation with the first regulating unit, for example, when the water level in the hot water storage tank 2 exceeds a certain range, the drain pump 4 and the bottom drain valve 8 can be simultaneously activated to discharge water into the chemical water tank 6 and the first water container 9, so that the water level in the hot water storage tank 2 is maintained within a certain range.

Example two

As shown in fig. 1, in this embodiment, which is a further limitation of the foregoing embodiment, the third adjusting unit includes a water pipe 13 disposed between the water inlet pipe of the hot water storage tank 2 and the water outlet pipe of the raw water heater 1, a bypass drain pipe 14 is disposed on the water pipe 13, a drain valve 15 and a flow regulating valve 16 are disposed on the bypass drain pipe 14, and a water outlet end of the bypass drain pipe 14 is connected to a second water container 17. Through being provided with bypass drain pipe 14 on raceway 13, even heat storage water tank 2 breaks down, raw water heater 1 still can keep former flow operation, need not adjust raw water heater 1's admission flow promptly to can not cause ultrafiltration device inlet water temperature too high, thereby avoid scalding the ultrafiltration membrane, prolong treatment facility life-span.

EXAMPLE III

As shown in fig. 1, the present embodiment is further defined by the above embodiment, the water inlet end of the raw water heater 1 is connected with a heating steam pipe 18 and an industrial water pipe 19 through pipelines, respectively, and the water inlet end of the industrial water pipe 19 is communicated with the water inlet pipe of the ultrafiltration device 5 through a pipeline. In order to avoid the damage to the ultrafiltration device caused by overhigh water inlet temperature and keep the raw water heater 1 to operate at the original flow rate, the water inlet end of the industrial water pipe 19 is communicated with the water inlet pipe of the ultrafiltration device 5 through a pipeline, so that water can be continuously heated in the raw water heater 1, the ultrafiltration membrane is prevented from being scalded, and the service life of treatment equipment is prolonged.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the above preferred embodiment, but not to limit the present invention, any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, and any simple modification, equivalent change and modification made to the above embodiments by the technical spirit of the present invention still fall within the scope of the present invention.

Claims

1. The utility model provides a stable device of control raw water heater leaving water temperature, includes raw water heater (1) and ultrafiltration device (5), its characterized in that: the device is characterized by further comprising at least one heat storage unit (20), wherein a water inlet pipe of the heat storage unit (20) is communicated with a water outlet pipe of the raw water heater (1), and a water outlet pipe of the heat storage unit (20) is communicated with a water inlet pipe of the ultrafiltration device (5).

2. The device for controlling the outlet water temperature stability of the raw water heater according to claim 1, characterized in that: the heat storage unit (20) comprises at least one heat storage water tank (2), a first adjusting unit, a second adjusting unit and a third adjusting unit are connected to the heat storage water tank (2), the water inlet pipe of the heat storage water tank (2) is communicated with the water outlet pipe of the raw water heater (1), and the water outlet pipe of the heat storage water tank (2) is communicated with the water inlet pipe of the ultrafiltration device (5).

3. The device for controlling the outlet water temperature stability of the raw water heater according to claim 2, characterized in that: first regulating unit includes level sensor and chemical water tank (6), level sensor sets up in heat storage water tank (2), the inlet tube in chemical water tank (6) with the outlet pipe intercommunication of heat storage water tank (2).

4. The device for controlling the outlet water temperature stability of the raw water heater according to claim 3, characterized in that: a water delivery pump (3) communicated with a water outlet pipe of the heat storage water tank (2) is arranged on a water inlet pipe of the ultrafiltration device (5).

5. The device for controlling the outlet water temperature stability of the raw water heater according to claim 4, wherein: and a water inlet pipe of the chemical water tank (6) is provided with a drainage pump (4) communicated with a water outlet pipe of the heat storage water tank (2).

6. The device for controlling the outlet water temperature stability of the raw water heater according to claim 2, characterized in that: the second regulating unit is including setting up overflow valve (7) on the upper portion of heat storage water tank (2) and with end row valve (8) that heat storage water tank (2) bottom is connected, the outlet pipe of overflow valve (7) and the outlet pipe end of end row valve (8) all are connected with first flourishing water receptacle (9).

7. The device for controlling the outlet water temperature stability of the raw water heater according to claim 2, characterized in that: the third regulating unit is including setting up heat storage water tank (2) the inlet tube with raceway (13) between the outlet pipe of raw water heater (1), be provided with bypass drain pipe (14) on raceway (13), be provided with drain valve (15) and flow control valve (16) on bypass drain pipe (14), and the flourishing water container of second (17) is connected to the play water end of this bypass drain pipe (14).

8. The device for controlling the outlet water temperature stability of the raw water heater according to claim 4, wherein: and a water outlet pipe of the heat storage water tank (2) is respectively communicated with a water inlet pipe of the ultrafiltration device (5) and a water inlet pipe of the chemical water tank (6) through a tee joint.

9. The device for controlling the outlet water temperature stability of the raw water heater according to claim 5, wherein: be provided with first valve (10) on the outlet pipe of heat storage water tank (2), be provided with on the inlet tube of ultrafiltration device (5) and be located second valve (11) in water delivery pump (3) the place ahead, be provided with on the inlet tube of chemical water pond (6) and be located third valve (12) in drain pump (4) the place ahead, first valve (10) second valve (11) and third valve (12) are the butterfly valve.

10. The device for controlling the outlet water temperature stability of the raw water heater according to claim 1, characterized in that: the water inlet end of the raw water heater (1) is respectively connected with a heating steam pipe (18) and an industrial water pipe (19) through pipelines, and the water inlet end of the industrial water pipe (19) is communicated with the water inlet pipe of the ultrafiltration device (5) through a pipeline.