CN214714434U - Built-in flash evaporation tank and transversely inserted heat exchange type condensate recovery facility - Google Patents

Abstract

The utility model relates to a built-in flash tank, including annular main body, annular main body digs along its outside wall circumference and is equipped with the recess, has seted up the water dripping hole on the lower side cell wall of recess, and this terminal surface of built-in flash tank is first terminal surface, and the other end is the second terminal surface, and built-in flash tank is established in the condensate collection tank, and first terminal surface is down, and the second terminal surface sets up towards the top. The system also comprises a horizontally inserted heat exchange type condensate recovery facility, a condensate collecting tank, a condensing heat exchanger and a conveying device, wherein the built-in flash tank is arranged in the condensate recovery facility; a condensate inlet and a heat exchanger mounting opening are formed in the side wall of the condensate collecting tank, and the heat exchanger mounting opening is arranged above the condensate inlet by a preset distance; the outer side of the first end face of the built-in flash tank is attached to the inner wall of the condensate collecting tank and is positioned below the condensate inlet; one end of the condensing heat exchanger extends into the condensate collecting tank from the heat exchanger mounting port, and the other end of the condensing heat exchanger is exposed outside the condensate collecting tank and is provided with a water inlet and a water outlet; the conveying device is positioned below the condensate collecting tank and communicated with the bottom of the condensate collecting tank.

Description

Built-in flash evaporation tank and transversely inserted heat exchange type condensate recovery facility

Technical Field

The application relates to the field of steam condensate recovery, in particular to a built-in flash tank and a transverse insertion heat exchange type condensate recovery facility.

Background

The condensate recovery system of present steam system mainly divide into open recovery system and closed recovery system, and open recovery system mainly has open water tank and water pump to constitute, causes the waste of heat and water resource easily, and closed recovery system mainly has components such as airtight recovery water pitcher and water pump, can airtight recovery steam condensate, but has the backpressure in the jar, and the condensate is difficult to flow back and causes the condensate recovery system operation not smooth. The two modes can not well recover the heat energy and the water resource of the condensed water, and many steam water condensation recovery systems in enterprises can not reach the standards of energy conservation and emission reduction, thereby causing resource waste.

SUMMERY OF THE UTILITY MODEL

In view of this, the present application provides a built-in flash evaporation tank, which includes an annular main body, the annular main body is dug along its outer sidewall circumference to form a groove, and a lower sidewall of the groove is formed with a water dropping hole, one end of the built-in flash evaporation tank, at which the water dropping hole is formed, is a first end surface, and the other end is a second end surface, the built-in flash evaporation tank is adapted to be disposed in a condensate collection tank, the first end surface is downward, and the second end surface is upward.

In a possible implementation manner, the groove bottom of the groove is provided with a steam through hole.

In one possible implementation, the annular outer diameter of the first end face is greater than the annular outer diameter of the second end face.

In a possible implementation manner, the number of the steam through holes is four, and the included angle degree from each two adjacent steam through holes to the center of the built-in flash tank is 90 degrees.

On the other hand, the built-in flash evaporation tank of any possible implementation manner is installed in the horizontally inserted heat exchange type condensate recovery facility, and the horizontally inserted heat exchange type condensate recovery facility further comprises a condensate collection tank, a condensing heat exchanger and a conveying device; a condensate inlet and a heat exchanger mounting opening are formed in the side wall of the condensate collecting tank, and the heat exchanger mounting opening is arranged above the condensate inlet at a preset distance; the outer side of the first end face of the built-in flash tank is attached to the inner wall of the condensate collecting tank and is positioned below the condensate inlet; one end of the condensation heat exchanger extends into the condensate collecting tank from the heat exchanger mounting port, and the other end of the condensation heat exchanger is exposed outside the condensate collecting tank and is provided with a water inlet and a water outlet; the conveying device is positioned below the condensate collecting tank and communicated with the bottom of the condensate collecting tank.

In one possible implementation, the heat exchanger further comprises a heat exchanger chute, a chute support and a seal; the heat exchanger slideway is arranged in the condensate collecting tank through the heat exchanger mounting hole and is matched with the condensing heat exchanger; the slideway supporting piece is arranged on the inner wall of the condensate collecting tank and used for erecting and fixing the heat exchanger slideway; the sealing element is arranged at the position where the condensate collecting tank is contacted with the condensing heat exchanger.

In a possible implementation manner, the preset distance between the condensate inlet and the heat exchanger mounting port is greater than 1 meter.

In a possible implementation manner, the bottom of the condensate collecting tank is of a convex arc structure with the height gradually decreasing from the side wall to the center.

In a possible implementation manner, a sewage draining hole and a water draining hole are formed in the bottom of the condensate collecting tank; the conveying device comprises a sewage discharge pipe, a water discharge pipe and a water pump; one end of the drain pipe extends into the condensate collecting tank from the drain hole by a preset depth, the other end of the drain pipe is provided with the water pump, and the drain pipe is sequentially provided with a flow rate control pipe, a filter and a pump front anti-cavitation device from the condensate collecting tank to the water pump; one end of the sewage discharge pipe is communicated to the sewage discharge hole, and the other end of the sewage discharge pipe is suitable for being communicated to an external treatment device.

In a possible implementation mode, the system further comprises a control cabinet, a temperature detection module, a liquid level detection module and a pneumatic regulating valve; the liquid level detection module is arranged on the outer wall of the condensate collection tank and communicated with the interior of the condensate collection tank; the temperature detection module is arranged in the condensate collection tank; the pneumatic regulating valve is arranged in front of the filter; the control cabinet is electrically connected with the temperature detection module, the liquid level detection module and the pneumatic regulating valve.

The utility model has the advantages that: the condensate flow guide of the condensate collecting tank is achieved through the annular groove, the condensate is effectively prevented from scouring the condensate collecting tank, the water dripping hole is formed in the groove wall on one side of the groove, condensate can drip along the hole, the condensate is enabled to be separated from water, flash steam and the condensate are completely separated, and cavitation in the condensate conveying engineering is avoided.

To this transversely insert heat exchange type lime set recovery facility, through with most condensation heat exchanger built-in the lime set collecting tank, guarantee that the system can retrieve the high temperature condensate water of different pressures under airtight state, effectively promote the recovery efficiency of water resource of condensing and flash distillation vapour heat energy. The heat of steam is taken away in the heat transfer of refrigerant medium (usually for water) and flash steam in the condensation heat exchanger to reduce the temperature of jar interior liquid and flash steam, lead to the pressure in the jar to also reduce after the temperature reduces in the lime set collecting tank, guaranteed like this that the lime set has pressure differential in inlet channel and flash tank, be favorable to the lime set to get into the lime set collecting tank smoothly. Meanwhile, the temperature in the tank can be controlled by controlling the amount of the low-temperature refrigerant medium, so that the pressure in the tank is ensured. The problems of back pressure and unsmooth flowing of flowing condensate of the conventional closed recovery of condensate are avoided, and the phenomena of water hammer, steam resistance and the like which are easy to generate are avoided. More than this, insert the condensate heat exchanger on the condensate holding vessel, still improved the cubical space utilization, reduced the area of device.

Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features, and aspects of the application and, together with the description, serve to explain the principles of the application.

FIG. 1 illustrates a schematic structural view of a cross-plug heat exchange condensate recovery facility according to an embodiment of the present application;

fig. 2 shows a perspective view of a built-in flash tank according to an embodiment of the present application.

Detailed Description

Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention or for simplicity in description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present application. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present application.

FIG. 1 illustrates a schematic structural view of a cross-plug heat exchange condensate recovery facility according to an embodiment of the present application;

fig. 2 shows a perspective view of a built-in flash tank according to an embodiment of the present application.

As shown in fig. 1 and 2, the built-in flash tank 20 includes an annular main body 21, a groove 22 is dug along the circumferential direction of the outer side wall of the annular main body 21, a water dropping hole 23 is formed on the lower side wall of the groove 22, one end of the built-in flash tank 20, on which the water dropping hole 23 is formed, is a first end face, the other end is a second end face, the built-in flash tank 20 is adapted to be disposed in the condensate collecting tank 10, the first end face is downward, and the second end face is upward.

In this embodiment, built-in flash drum 20 includes annular main body 21, dig on the outer wall and be equipped with recess 22, this built-in flash drum 20 generally installs in the collecting vessel of lime set collecting system, cooperate the condensate water and the flash steam recycle of all the other equipment to the lime set, through the lime set water conservancy diversion of annular recess 22 to getting into lime set collecting vessel 10, prevent effectively that the lime set from scouring lime set collecting vessel 10, set up the hole 23 that drips on the cell wall of recess 22 one side, the condensate water can drip down along the hole, make the lime set realize the steam-water separation, flash steam and lime set complete separation, avoid taking place the cavitation in the condensate water transport engineering, be applicable to the utility work of petrochemical engineering device.

It should be particularly emphasized that the specific shape of the annular main body may be a square ring, a circular ring, an elliptical ring, etc., and the specific shape is not limited, so long as the annular main body can be attached and fixed to the inner wall of the condensate collecting tank.

In one particular embodiment, the annular outer diameter of the first end face is greater than the annular outer diameter of the second end face.

In this embodiment, the annular outer diameter of the first end surface is larger than that of the second end surface, so that the built-in flash evaporation tank 20 can be more conveniently placed into the condensate collecting tank 10, a gap is left between the second end surface and the inner wall of the condensate collecting tank 10, part of flash evaporation steam can exchange heat upwards from the gap, and the heat exchange efficiency of the device is improved.

As shown in fig. 2, in one embodiment, one end of the internal flash tank 20, which is provided with the water dripping holes 23, is a first end surface, and the other end is a second end surface, and the annular inner diameter of the first end surface is larger than that of the second end surface. The groove bottom of the groove 22 is provided with a steam through hole 24.

In this embodiment, the end of the internal flash evaporation tank 20, on which the water dripping holes 23 are formed, is a first end surface, and the other end is a second end surface, specifically, when the internal flash evaporation tank 20 is installed, the first end surface faces downward, so that the condensed water can smoothly flow out of the tank. It should be noted that the steam through hole 24 does not go to flash steam, and partial condensate and condensed water can be left from the steam through hole 24, but the operation of the device is not affected, and the whole device, that is, the flash steam goes to the mountain, and the condensed water goes downward, so that the two are completely separated.

In one embodiment, the minimum inside diameter length of the internal flash drum 20 is greater than half its outside diameter length.

In one embodiment, two of the drip holes 23 are arranged in a group side by side on the groove wall of the groove 22, and a plurality of groups of the drip holes 23 are arranged at equal intervals in the circumferential direction of the groove 22.

As shown in fig. 2, in one embodiment, the groove bottom of the groove 22 is provided with four steam through holes 24, the number of the steam through holes 24 is square, and the angle between two adjacent steam through holes 24 and the center of the built-in flash tank 20 is 90 degrees.

As shown in fig. 1, in another aspect, the present application further provides an indirect heat exchange condensate recovery facility based on any of the previously described built-in flash drums 20. The heat exchange type condensate recovery facility with the transverse insertion in the embodiment of the present application includes any one of the above-described built-in flash tanks 20. The built-in flash evaporation tank 20 is arranged in the condensate collecting tank 10 of the transverse heat exchange type condensate recovery facility, so that condensate can be well guided, and flash evaporation steam and condensed water can be completely separated.

Specifically, the horizontally inserted heat exchange type condensate recovery facility is internally provided with a built-in flash tank 20 of any possible implementation manner, and further comprises a condensate collecting tank 10, a condensing heat exchanger 30 and a conveying device; a condensate inlet 11 and a heat exchanger mounting port are formed in the side wall of the condensate collecting tank 10, and the heat exchanger mounting port is arranged above the condensate inlet 11 by a preset distance; the outer side of the first end face of the built-in flash tank 20 is attached to the inner wall of the condensate collecting tank 10 and is positioned below the condensate inlet 11; one end of the condensing heat exchanger extends into the condensate collecting tank 10 from the heat exchanger mounting port, and the other end of the condensing heat exchanger is exposed out of the condensate collecting tank 10 and is provided with a water inlet and a water outlet; the conveying device is positioned below the condensate collecting tank 10 and communicated with the bottom of the condensate collecting tank 10.

In this embodiment, most of the condensing heat exchangers 30 are arranged in the condensate collecting tank 10, so that the system can recover high-temperature condensed water with different pressures in a closed state, and the recovery efficiency of condensed water resources and the heat energy of flash steam is effectively improved. The interpolation type condensation heat exchanger 30 can cool the flash steam on the premise of keeping the temperature and the pressure in the tank, and ensures that the heat energy of the flash steam is utilized with the maximum efficiency.

After high temperature lime set got into lime set collecting vessel 10 from the water inlet, the lime set flash in built-in flash drum 20, flash steam rises and carries out the heat exchange with condensation heat exchanger 30 contact, refrigerant medium (usually be water) and flash steam heat transfer through in the condensation heat exchanger 30, take away the heat of steam, thereby reduce the temperature of jar interior liquid and flash steam, lead to the pressure in the jar also to reduce after the temperature reduces in the lime set collecting vessel 10, it has pressure differential to have guaranteed like this to congeal liquid in inlet channel and flash drum, be favorable to the lime set to get into lime set collecting vessel 10 smoothly. Meanwhile, the temperature in the tank can be controlled by controlling the amount of the low-temperature refrigerant medium, so that the pressure in the tank is ensured. The problems of back pressure and unsmooth flowing of flowing condensate of the conventional closed recovery of condensate are avoided, and the phenomena of water hammer, steam resistance and the like which are easy to generate are avoided. In addition, the transverse insertion heat exchange type condensate recovery facility also improves the utilization rate of a three-dimensional space and reduces the occupied area of the device due to the insertion of the condensing heat exchanger 30.

The transverse inserted heat exchange type condensate recovery facility is suitable for condensate recovery of various steam indirect heat exchange systems, can recover high-temperature condensate water with different pressures in a closed state, and finally forms high-temperature water with the temperature of 90-150 degrees.

More specifically, the specific workflow of the system is as follows: the condensate enters the built-in flash tank 20 through the condensate inlet 11 to be subjected to steam-water separation, separated flash steam is subjected to heat exchange and condensation through the condensing heat exchanger 30 and then turns into condensate water to flow back to the lower part of the condensate collecting tank 10, non-condensable gas is discharged through the demister at the top of the condensate collecting tank 10 and the steam discharge port 13, and the condensate water is discharged to the conveying device from the lower part of the condensate collecting tank 10.

In one embodiment, a heat exchanger skid, a skid support 33, and a seal are also included; the heat exchanger slideway is arranged in the condensate collecting tank 10 through a heat exchanger mounting hole and is matched with the condensing heat exchanger 30; the slideway support 33 is arranged on the inner wall of the condensate collecting tank 10 and is used for erecting and fixing a heat exchanger slideway; the sealing member is provided at a position where the condensate collection tank 10 contacts the condensing heat exchanger 30.

In this embodiment, the condensing heat exchanger 30 is provided with a sliding portion, the sliding portion is matched with the heat exchanger slide way, the fixed heat exchanger slide way is erected by the slide way supporting member 33 to ensure stability, the sufficient structural strength is achieved, the farthest end of the slide way is provided with a locking mechanism to completely fix the condensing heat exchanger 30 which is installed in place, the sliding connection mode is not specifically limited, the dismounting of the personnel in the field is easy, and convenience is brought to overhaul and maintenance. The setting of sealing member guarantees that this system realizes pressing the area and retrieves, increases application scope.

In one embodiment, the portion of the condensing heat exchanger 30 above 2/3 is disposed within the condensate collection tank 10.

In this embodiment, preferably, the condensing heat exchanger 30 adopts a floating head type corrugated pipe for heat exchange, so that scaling is not easy to occur, and the maintenance is convenient.

In one embodiment, the predetermined distance between the condensate inlet 11 and the mounting portion is greater than 1 meter.

More specifically, the top of the condensate collecting tank 10 is also provided with a safety valve 12 and a steam outlet 13, and valve switches are mounted on pipe fittings.

In one embodiment, the bottom of the condensate collecting tank 10 is provided with a sewage draining hole and a water draining hole; the conveying device comprises a sewage discharge pipe 50, a water discharge pipe 40 and a water pump 65; one end of the drain pipe 40 extends into the condensate collecting tank 10 from the drain hole by a preset depth, the other end is provided with a water pump 65, and the drain pipe 40 is sequentially provided with a flow rate control pipe, a filter 63 and a pump front cavitation prevention device 64 from the condensate collecting tank 10 to the water pump 65; one end of the blow-off pipe 50 is connected to a blow-off hole and the other end is adapted to be connected to an external treatment device.

In this embodiment, the treatment capacity of the heat exchange type condensate recovery facility is large, and is more than 50 tons/hour, and the maximum treatment capacity is 580 tons/hour.

In one embodiment, the system further comprises a control cabinet 60, a temperature detection module, a liquid level detection module 61 and a pneumatic regulating valve 62; the liquid level detection module 61 is arranged on the outer wall of the condensate collecting tank 10 and communicated with the interior of the condensate collecting tank; the temperature detection module is arranged in the condensate collection tank 10; the pneumatic regulating valve 62 is arranged in front of the filter 63; the control cabinet 60 is electrically connected with the temperature detection module, the liquid level detection module 61 and the pneumatic control valve 62.

In this embodiment, specifically, the temperature control module is disposed at the position of the condensate inlet 11, the flow rate control pipe is specifically provided with an induction edge on the inner wall of the pipe, the pipe diameters at the two ends of the pipe are different, generally 2-3 times, the temperature detection module, the liquid level detection module 61 controls the pneumatic control valve 62 for temperature and pressure in the tank to ensure the water inflow of low-temperature water so as to maintain the temperature and pressure in the tank, the liquid level sensor transmits a liquid level signal to the electric control cabinet or the DCS when the water level reaches a set high water level through the operation state of the liquid level control water pump 65, the water pump 65 is automatically started to realize the automatic control of the recovery system, the transverse insertion heat exchange type condensate recovery facility ensures the sealing property in the condensate collection tank 10 through adjusting the condensation amount, the normal pressure recovery can be realized, the recovery under pressure recovery can also be realized, and the recycle of flash steam can be completed, without negative effects in the device.

Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (10)

1. The built-in flash tank is characterized by comprising an annular main body, wherein a groove is formed in the annular main body in a circumferential direction along the outer side wall of the annular main body, a water dripping hole is formed in the lower side wall of the groove, one end, provided with the water dripping hole, of the built-in flash tank is a first end face, the other end of the built-in flash tank is a second end face, the built-in flash tank is suitable for being arranged in a condensate collecting tank, the first end face is downward, and the second end face is upward.

2. The built-in flash tank of claim 1, wherein the bottom of the groove is provided with steam vents.

3. The internal flash drum of claim 1, wherein the annular outer diameter of the first end face is greater than the annular outer diameter of the second end face.

4. The internal flash tank of claim 2, wherein the number of the steam through holes is four, and the included angle between two adjacent steam through holes and the center of the internal flash tank is 90 degrees.

5. A transversely inserted heat exchange type condensate recovery facility is characterized in that a built-in flash tank according to any one of claims 1 to 4 is installed in the transversely inserted heat exchange type condensate recovery facility, and the transversely inserted heat exchange type condensate recovery facility further comprises a condensate collecting tank, a condensing heat exchanger and a conveying device;

a condensate inlet and a heat exchanger mounting opening are formed in the side wall of the condensate collecting tank, and the heat exchanger mounting opening is arranged above the condensate inlet at a preset distance;

the outer side of the first end face of the built-in flash tank is attached to the inner wall of the condensate collecting tank and is positioned below the condensate inlet;

one end of the condensation heat exchanger extends into the condensate collecting tank from the heat exchanger mounting port, and the other end of the condensation heat exchanger is exposed outside the condensate collecting tank and is provided with a water inlet and a water outlet;

the conveying device is positioned below the condensate collecting tank and communicated with the bottom of the condensate collecting tank.

6. The lateral plug heat exchange condensate recovery facility of claim 5, further comprising a heat exchanger skid, a skid support, and a seal;

the heat exchanger slideway is arranged in the condensate collecting tank through the heat exchanger mounting hole and is matched with the condensing heat exchanger;

the slideway supporting piece is arranged on the inner wall of the condensate collecting tank and used for erecting and fixing the heat exchanger slideway;

the sealing element is arranged at the position where the condensate collecting tank is contacted with the condensing heat exchanger.

7. The lateral heat exchange type condensate recovery facility according to claim 5, wherein the preset distance between the condensate inlet and the heat exchanger mounting port is greater than 1 meter.

8. The laterally inserted heat exchange type condensate recovery facility according to claim 5, wherein the bottom of the condensate collection tank is a convex arc structure with a height gradually decreasing from the side wall to the center.

9. The transversely inserted heat exchange type condensate recovery facility as claimed in claim 8, wherein a drain hole and a drain hole are formed at the bottom of the condensate collection tank;

the conveying device comprises a sewage discharge pipe, a water discharge pipe and a water pump;

one end of the drain pipe extends into the condensate collecting tank from the drain hole by a preset depth, the other end of the drain pipe is provided with the water pump, and the drain pipe is sequentially provided with a flow rate control pipe, a filter and a pump front anti-cavitation device from the condensate collecting tank to the water pump;

one end of the sewage discharge pipe is communicated to the sewage discharge hole, and the other end of the sewage discharge pipe is suitable for being communicated to an external treatment device.

10. The lateral plug-in heat exchange type condensate recovery facility according to claim 9, further comprising a control cabinet, a temperature detection module, a liquid level detection module and a pneumatic regulating valve;

the liquid level detection module is arranged on the outer wall of the condensate collection tank and communicated with the interior of the condensate collection tank;

the temperature detection module is arranged in the condensate collection tank;

the pneumatic regulating valve is arranged in front of the filter;

the control cabinet is electrically connected with the temperature detection module, the liquid level detection module and the pneumatic regulating valve.

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