CN219149237U

CN219149237U - External heating MVR evaporator

Info

Publication number: CN219149237U
Application number: CN202222747547.0U
Authority: CN
Inventors: 刘当梅; 赵珂
Original assignee: Blue Origin Environmental Technology Changzhou Co ltd
Current assignee: Blue Origin Environmental Technology Changzhou Co ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-06-09
Anticipated expiration: 2032-10-19

Abstract

The utility model relates to the field of environmental protection, in particular to an external heating MVR evaporator, which comprises: the steam heat exchanger is configured in the support frame and comprises a cylinder body, and a plurality of heat conduction pipes with corrugated structures for media to pass through are configured in the cylinder body. The technical scheme of the utility model solves the technical problems of overlarge volume and poor heat exchange effect of the steam heat exchanger of the MVR evaporator in the prior art.

Description

External heating MVR evaporator

Technical Field

The utility model relates to the field of environmental protection, in particular to an external heating MVR evaporator.

Background

The MVR evaporator is different from a common single-effect falling film evaporator or a multi-effect falling film evaporator, the MVR is a monomer evaporator, the multi-effect falling film evaporator is integrated, sectional evaporation is adopted according to different required product concentrations, namely when the product cannot reach the required concentration after passing through the effect body for the first time, the product is pumped to the upper part of the effect body through a vacuum pump at the lower part of the effect body to pass through the effect body again through an external pipeline of the effect body after leaving the effect body, and then the required concentration is achieved through the repeated passing effect body.

However, the existing MVR evaporator has the defects that the volume of a steam heat exchanger is too large, and the heat exchange effect is poor; in addition, the existing MVR evaporator calculates the flow of distilled water by arranging a flowmeter on a pipeline, however, the flowmeter needs to have a single minimum flow to accurately calculate the flow, and in the operation process of the MVR evaporator, the minimum flow value can not be reached every time the MVR evaporator is started, so that inaccurate flow calculation is often caused.

Disclosure of Invention

In order to solve the technical problems that the volume of a steam heat exchanger of an MVR evaporator is too large and the heat exchange effect is poor in the prior art, the application provides an external heating MVR evaporator, and solves the technical problems.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides an external heating MVR evaporator, which comprises: a support frame; the steam heat exchanger is arranged in the supporting frame and comprises a cylinder body, and a plurality of heat conduction pipes with corrugated structures for media to pass through are arranged in the cylinder body.

The heat conduction pipe in the cylinder body of the external heating type MVR evaporator has a corrugated structure, so that the heat exchange area can be increased on the premise of not changing the quantity of the heat conduction pipes in the original cylinder body, in other words, the quantity of the heat conduction pipes can be reduced under the same heat exchange efficiency, the volume of the cylinder body of the steam heat exchanger is reduced, and the technical problems that the volume of the steam heat exchanger of the MVR evaporator is overlarge and the heat exchange effect is poor in the prior art are solved.

Further, the steam heat exchanger further comprises a steam separator, wherein the steam separator is arranged in the supporting frame, the steam separator is communicated with the upstream of the steam heat exchanger, and a foam removing device is arranged on the steam separator.

Further, a mechanical metering device is also wrapped, the mechanical metering device is communicated with the downstream of the steam heat exchanger, and a metering cavity for calibrating the volume of passing medium is formed in the mechanical metering device.

Further, the mechanical metering device also comprises a liquid level sensor for sensing the liquid level in the metering cavity.

Further, the mechanical metering device also comprises a first electrically controlled stop valve arranged at the inlet and a second electrically controlled stop valve arranged at the outlet of the mechanical metering device.

Further, the device also comprises a waste heat recovery device, wherein a distilled water inlet of the waste heat recovery device is communicated with an outlet of the mechanical metering device so as to receive distilled water in the metering cavity, and a tank body of the waste heat recovery device is transversely arranged in the supporting frame.

Based on the technical scheme, the utility model has the following technical effects:

The utility model provides an external heating formula MVR evaporimeter, after the liquid level in the measurement chamber reaches the assigned position in mechanical metering device, level sensor feeds back the signal to the host computer, and the host computer counts, and the first automatically controlled stop valve of import department is closed in the host computer control simultaneously and the automatically controlled stop valve of second of opening exit, carries out the second circulation after the distilled water in the measurement chamber has all flowed out to the time of having had set for to solve the inaccurate technical problem of MVR evaporimeter flow calculation of current use flowmeter.

Drawings

Fig. 1 is a schematic diagram of an externally heated MVR evaporator of the present application.

Wherein: 1-a supporting frame; 2-steam heat exchanger, 21-cylinder, 22-heat-conducting pipe; 3-steam separator, 31-defoaming device; 4-a mechanical metering device; 5-waste heat recovery device, 51-tank body; 6-compressor.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

As shown in fig. 1, the application provides an external heating MVR evaporator, which comprises a support frame 1 and a steam heat exchanger 2, wherein the steam heat exchanger 2 is arranged in the support frame 1, the steam heat exchanger 2 comprises a cylinder 21, and a plurality of heat conduction pipes 22 with corrugated structures for media to pass through are arranged in the cylinder 21.

The heat conduction pipe 22 in the barrel 21 of the external heating type MVR evaporator 2 has a corrugated structure, so that the heat exchange area can be increased on the premise of not changing the quantity of the heat conduction pipes 22 in the original barrel 21, in other words, the quantity of the heat conduction pipes 22 can be reduced under the same heat exchange efficiency, and the volume of the barrel 21 of the steam heat exchanger 2 is reduced, thereby solving the technical problems that the volume of the steam heat exchanger 2 of the MVR evaporator is overlarge and the heat exchange effect is poor in the prior art.

The external heating type MVR evaporator of the application further comprises a steam separator 3, wherein the steam separator 3 is arranged in the supporting structure, the steam separator 3 is communicated with the upstream of the steam heat exchanger 2, and the steam separator 3 is provided with a foam removing device 31. This allows the foam in the vapor separator 3 to flow back out while protecting the compressor 6 connected to the vapor separator 3.

The external heating MVR evaporator of the application also comprises a mechanical metering device 4, wherein the mechanical metering device 4 is communicated with the downstream of the steam heat exchanger 2, and a metering cavity for calibrating the volume of passing medium is formed in the mechanical metering device 4. The externally heated MVR evaporator of the present application no longer uses a flow meter to calculate flow, but rather calculates flow separately by means of a metering chamber formed within the mechanical metering device 4.

Further, the mechanical metering device 4 also comprises a liquid level sensor for sensing the liquid level in the metering chamber. The liquid level sensor can ensure that distilled water in the metering cavity reaches the designated scale.

Further, the mechanical metering device 4 further comprises a first electrically controlled shut-off valve arranged at the inlet and a second electrically controlled shut-off valve arranged at the outlet of the mechanical metering device 4.

Specifically, after the liquid level of the metering cavity in the mechanical metering device 4 reaches a designated position, a liquid level sensor feeds signals back to the upper computer, the upper computer counts, and meanwhile, the upper computer controls to close the first electric control stop valve at the inlet and open the second electric control stop valve at the outlet, and after the set time, distilled water in the metering cavity flows out, the second circulation is carried out, so that the technical problem of inaccurate flow calculation of the MVR evaporator using the flowmeter in the prior art is solved.

Still include waste heat recovery device 5, waste heat recovery device 5's distilled water import and mechanical metering device 4's export intercommunication is in order to receive the distilled water of measurement intracavity, and simultaneously, waste heat recovery device 5's jar body 51 is horizontal in support frame 1, and the circulation of medium can be made more smooth and easy to horizontal jar body 51.

It should be understood that the above-described specific embodiments are only for explaining the present utility model and are not intended to limit the present utility model. Obvious variations or modifications which extend from the spirit of the present utility model are within the scope of the present utility model.

Claims

1. An externally heated MVR evaporator comprising:

a support (1);

the steam heat exchanger (2), the steam heat exchanger (2) disposes in support frame (1), the steam heat exchanger (2) includes barrel (21), dispose many heat conduction pipe (22) that have corrugated structure that supply the medium to pass through in barrel (21).

2. The externally heated MVR evaporator according to claim 1, further comprising a vapor separator (3), the vapor separator (3) being arranged in the support frame (1), the vapor separator (3) being in communication upstream of the vapor heat exchanger (2), and a foam removing device (31) being arranged on the vapor separator (3).

3. The externally heated MVR evaporator according to claim 1, characterized by a mechanical metering device (4), the mechanical metering device (4) being in communication downstream of the steam heat exchanger (2), a metering chamber being formed in the mechanical metering device (4) for calibrating the volume of the passing medium.

4. An external heating MVR evaporator according to claim 3, characterized in that the mechanical metering device (4) further comprises a liquid level sensor for sensing the liquid level in the metering chamber.

5. The external heating MVR evaporator according to claim 4, characterized in that the mechanical metering device (4) further comprises a first electrically controlled shut-off valve arranged at the inlet and a second electrically controlled shut-off valve arranged at the outlet of the mechanical metering device (4).

6. The externally heated MVR evaporator according to claim 5, further comprising a waste heat recovery device (5), wherein a distilled water inlet of the waste heat recovery device (5) is in communication with an outlet of the mechanical metering device (4) to receive distilled water in the metering chamber, and wherein a tank (51) of the waste heat recovery device (5) is laterally placed in the support frame (1).