Steam white smoke eliminating device

Abstract

The utility model provides a steam white smoke eliminating device which comprises a steam pipe, a smoke exhaust pipe, a smoke exhaust pipe, a smoke exhaust pipe and a smoke exhaust pipe. The connecting pipe is provided with an inlet end and at least one outlet end, and the inlet end of the connecting pipe is configured to be connected with a water source of cooling water; the nozzle is arranged at the outlet end of the connecting pipe and is configured to spray cooling water into the steam pipe so as to reduce the steam temperature in the steam pipe; the temperature sensor is arranged on the steam pipe on the downstream of the nozzle in the steam conveying direction and is configured to detect the actual value of the steam temperature of the position where the temperature sensor is located; and the flow control valve is arranged on the connecting pipe, is in signal connection with the temperature sensor and is configured to adjust the opening degree of the flow control valve according to the actual value so as to adjust the flow of the cooling water in the connecting pipe. The steam white elimination device provided by the utility model can improve the phenomenon of steam discharge to the air.

Description

Technical Field

[0001] The present disclosure relates to the field of tobacco processing tail gas treatment, and particularly to a steam de - whitening device. Background Art

[0002] Steam is required in the tobacco processing process. The condensed water generated by the steam is recovered by a condensed water recovery pump and sent to a de - oxygenation water tank for secondary utilization. During the condensed water recovery process, due to the flashing effect and possible leakage of the front - end steam trap, a large amount of steam will be generated and discharged from the steam pipe. Looking from the outside, it seems that white smoke is ejected from the pipe. The essence of the white smoke is water vapor at a relatively high temperature. Discharging it into the air will cause energy waste; moreover, surrounding residents are likely to regard the white smoke as harmful waste gas, resulting in frequent complaints. Summary of the Utility Model

[0003] The purpose of the present disclosure is to provide a steam de - whitening device to improve the phenomenon of steam discharging into the air.

[0004] The present disclosure provides a steam de - whitening device, which is characterized by comprising:

[0005] A steam pipe configured to convey the steam discharged after tobacco leaf processing;

[0006] A connecting pipe having an inlet end and at least one outlet end, wherein the inlet end of the connecting pipe is configured to be connected to a water source of cooling water;

[0007] Nozzles arranged at the outlet end of the connecting pipe and configured to spray cooling water into the steam pipe to reduce the steam temperature in the steam pipe;

[0008] A temperature sensor arranged in the steam pipe downstream of the nozzle along the steam conveying direction and configured to detect the actual value of the steam temperature at the location; and

[0009] A flow control valve arranged in the connecting pipe, the flow control valve being in signal connection with the temperature sensor and configured to adjust its own opening degree according to the actual value to adjust the flow rate of the cooling water in the connecting pipe.

[0010] In some embodiments, it further includes a control device, and the control device includes:

[0011] A storage unit storing the corresponding relationship between different initial values of the steam temperature in the steam pipe and the minimum opening degree of the flow control valve required to reduce the actual value to a target value, the initial value being the actual value before the flow control valve is opened; and

[0012] The control unit is signal - connected to the storage unit, the flow control valve, and the temperature sensor, and is configured to adjust the opening degree of the flow control valve to the minimum value corresponding to the initial value according to the corresponding relationship.

[0013] In some embodiments, the plurality of nozzles are arranged side - by - side at intervals along the steam delivery direction.

[0014] In some embodiments, a filter is further provided on the connecting pipe, and the filter is configured to filter impurities in the cooling water.

[0015] In some embodiments, an on - off control valve is further provided on the connecting pipe, and the on - off control valve is configured to control the connection or disconnection of the connecting pipe and the water source of the cooling water.

[0016] In some embodiments, the steam pipe includes a first pipe section, a second pipe section, and a third pipe section arranged in sequence along the steam delivery direction. The nozzle is disposed in the second pipe section, and the second pipe section is detachably installed between the first pipe section and the third pipe section.

[0017] In some embodiments, a first flange structure and a second flange structure are further included. The first pipe section and the second pipe section are connected through the first flange structure, and the third pipe section and the second pipe section are connected through the second flange structure.

[0018] In some embodiments, the temperature sensor is disposed at one end of the third pipe section connected to the second pipe section.

[0019] The steam de - whitening device provided by the present disclosure can spray the cooling water provided by the connecting pipe into the steam pipe through the nozzle, which can reduce the temperature of the steam in the steam pipe, cause partial steam to condense and be eliminated, reduce the steam volume, improve the phenomenon of steam discharging into the air, reduce the generation of white smoke, thereby reducing energy waste and the phenomenon of white smoke being mis - taken as harmful waste gas and being complained about. And when the flow control valve is closed, the detection result of the temperature sensor can reflect the steam temperature when the cooling water is not sprayed. After the flow control valve is opened, the detection result of the temperature sensor can reflect the steam temperature after the cooling water is sprayed. Adjusting the opening degree of the flow control valve accordingly can make the spraying amount of the cooling water well - matched with the demand for eliminating steam (eliminating steam means "de - whitening"), so as to achieve a good steam elimination effect.

[0020] Other features and advantages of the present disclosure will become clear through the following detailed description of the exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings described herein are used to provide a further understanding of the present disclosure and form a part of this application. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation of the present disclosure. In the drawings:

[0022] Figure 1 It is a schematic structural diagram of a steam demisting device for some embodiments of the present disclosure.

[0023] In the drawings, each reference numeral represents respectively:

[0024] 1. Connecting pipe; 2. On-off control valve; 3. Filter; 4. Flow control valve; 5. Temperature sensor; 6. Nozzle; 71. First flange structure; 72. Second flange structure; 8. Steam pipe; 81. First pipe section; 82. Second pipe section; 83. Third pipe section. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present disclosure will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way restricts the present disclosure and its application or use. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present disclosure.

[0026] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present disclosure. At the same time, it should be understood that for the convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, these technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0027] In the description of the present disclosure, it should be understood that using words such as "first" and "second" to limit the components is only for the convenience of distinguishing the corresponding components. Without further statement, the above words have no special meanings and therefore cannot be construed as limiting the scope of protection of the present disclosure.

[0028] In the description of the present disclosure, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present disclosure and simplifying the description. Without contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present disclosure; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0029] Referring to Figure 1 , the present disclosure provides a steam de - whitening device, which includes a steam pipe 8, a connecting pipe 1, a nozzle 6, a temperature sensor 5 and a flow control valve 4. The steam pipe 8 is configured to convey the steam discharged after tobacco leaf processing. The connecting pipe 1 has an inlet end and at least one outlet end. The inlet end of the connecting pipe 1 is configured to be connected to the water source of cooling water. The nozzle 6 is arranged at the outlet end of the connecting pipe 1 and is configured to spray cooling water into the steam pipe 8 to reduce the steam temperature in the steam pipe 8. The temperature sensor 5 is arranged in the steam pipe 8 downstream of the nozzle 6 along the steam conveying direction and is configured to detect the actual value of the steam temperature at the location. The flow control valve 4 is arranged in the connecting pipe 1. The flow control valve 4 is signal - connected to the temperature sensor 5 and is configured to adjust its own opening degree according to the actual value to adjust the flow rate of the cooling water in the connecting pipe 1.

[0030] The steam de - whitening device provided by the embodiment of the present disclosure can spray the cooling water provided by the connecting pipe 1 into the steam pipe 8 through the nozzle 6, which can reduce the steam temperature in the steam pipe 8, cause part of the steam to condense and be eliminated, reduce the steam volume, improve the phenomenon of steam discharging into the air, reduce the generation of white smoke, thereby reducing energy waste and the phenomenon of white smoke being mis - taken as harmful waste gas and being complained about. Moreover, when the flow control valve 4 is closed, the detection result of the temperature sensor 5 can reflect the steam temperature before the cooling water is sprayed. When the flow control valve 4 is opened, the detection result of the temperature sensor 5 can reflect the steam temperature after the cooling water is sprayed. Accordingly, adjusting the opening degree of the flow control valve 4 can make the spraying amount of the cooling water well - match the demand for eliminating steam (eliminating steam is "de - whitening"), so as to achieve a good effect of eliminating steam.

[0031] In some embodiments, the steam de - whitening device further includes a control device, and the control device includes a storage part and a control part. The storage part stores the corresponding relationship between the initial values of the steam temperature in different steam pipes 8 and the minimum values of the opening degrees of the flow control valve 4 required to reduce the actual value to the target value. The initial value is the actual value before the flow control valve 4 is opened. The control part is signal - connected to the storage part, the flow control valve 4 and the temperature sensor 5 and is configured to adjust the opening degree of the flow control valve 4 to the minimum value corresponding to the initial value according to the corresponding relationship.

[0032] In this embodiment, the target value of the steam temperature can be determined according to the specific requirements for eliminating steam. When the steam temperature drops to the target value, it indicates that the steam temperature is low enough at this time, and the amount of steam is correspondingly low enough after spraying cooling water, thus meeting the requirements for eliminating steam.

[0033] Considering that the flow rate of the flash steam is difficult to directly measure, but there is a proportional relationship between the temperature at the downstream position of the nozzle 6 along the steam transport direction and the flow rate of the flash steam. Therefore, the degree of decrease in the actual value of the steam temperature at the position of the temperature sensor 5 before and after spraying cooling water can reflect the effect of eliminating steam.

[0034] The corresponding relationship between the initial value of the steam temperature in different steam pipes 8 and the minimum opening degree of the flow control valve 4 required to reduce the actual value to the target value can be obtained through the following test process.

[0035] 1. Under a certain production condition, keep the flow control valve 4 closed, and detect the actual value of the steam temperature at the position of the temperature sensor 5 as the initial value T1.

[0036] 2. Open the flow control valve 4 and gradually increase the opening degree of the flow control valve 4. Record the actual value of the steam temperature at the position of the temperature sensor 5 corresponding to different opening degrees of the flow control valve 4. The actual value of the steam temperature and the concentration of the white smoke formed by the steam gradually decrease as the opening degree of the flow control valve 4 increases. When the actual value of the steam temperature at the position of the temperature sensor 5 drops to the lowest, correspondingly, the concentration of the white smoke also drops to the minimum. At this time, even if the opening degree of the flow control valve 4 is continuously increased and the amount of sprayed cooling water is increased, the actual value of the steam temperature and the concentration of the white smoke will basically no longer change, and it can be considered that the effect of eliminating steam has reached the best. Record the actual value at this time as the target value T2, and record the opening degree of the flow control valve 4 when the steam temperature at the position of the temperature sensor 5 just drops to this target value T2. The value of the opening degree of the flow control valve 4 at this time is the minimum value required to make the actual value of the steam temperature reach the target value T2. Thus, the corresponding relationship between the initial value T1 under the current production condition and the minimum value required to make the actual value of the steam temperature reach the target value T2 can be obtained.

[0037] 3. Under different production conditions, the initial values of the steam temperature are different. Based on different production conditions, repeat the above steps 1 - 2 to obtain the corresponding relationships between different initial values T1 of the steam temperature and different minimum values required to make the actual value of the steam temperature reach the target value T2 under different production conditions.

[0038] In this embodiment, the steam demisting device can determine the opening degree of the flow control valve 4 according to the specific production conditions through the above corresponding relationship, so as to achieve the expected steam elimination effect with less cooling water volume, which is beneficial to saving water resources and energy consumption.

[0039] In some embodiments, referring to Figure 1 , a plurality of nozzles 6 are arranged side by side at intervals along the steam conveying direction.

[0040] In this embodiment, a plurality of nozzles 6 are arranged side by side at intervals along the steam conveying direction, which can fully cool down the flowing steam and improve the steam elimination effect. Optionally, referring to Figure 1 , the connecting pipe 1 has four outlet ends, and correspondingly, the number of nozzles 6 is four. Optionally, the nozzles 6 are solid conical nozzles.

[0041] In some embodiments, the steam demisting device further includes a filter 3 provided on the connecting pipe 1, and the filter 3 is configured to filter impurities in the cooling water.

[0042] In this embodiment, setting the filter 3 can reduce the risk that impurities in the cooling water enter the position where the flow control valve 4 is located and cause damage to the valve core of the flow control valve 4.

[0043] In some embodiments, the steam demisting device further includes an on-off control valve 2 provided on the connecting pipe 1, and the on-off control valve 2 is configured to control the connection or disconnection of the connecting pipe 1 and the water source of the cooling water.

[0044] When there is a need to eliminate steam during the production process, the on-off control valve 2 is opened, and cooling water is sprayed into the steam pipe 8 through the nozzles 6; when the production stops, the on-off control valve 2 is closed, and the spraying of cooling water into the steam pipe 8 is stopped.

[0045] Optionally, referring to Figure 1 , the on-off control valve 2, the filter 3 and the flow control valve 4 are arranged in sequence along the cooling water conveying direction.

[0046] In some embodiments, the steam pipe 8 includes a first pipe section 81, a second pipe section 82 and a third pipe section 83 arranged in sequence along the steam conveying direction, the nozzles 6 are arranged in the second pipe section 82, and the second pipe section 82 is detachably installed between the first pipe section 81 and the third pipe section 83.

[0047] Based on the structure of the steam pipe 8 in the above embodiments, the steam demisting device can be modified on the basis of the current steam pipeline and cooling water supply pipeline in the cigarette making workshop. The specific modification process is as follows.

[0048] Connect the inlet end of the connecting pipe 1 to the cooling water supply pipeline, and then install the on-off control valve 2, the filter 3 and the flow control valve 4 on the connecting pipe 1 in sequence along the cooling water flow direction.

[0049] Cut a steam pipe of a preset length at an appropriate position, and fabricate a pipe of the same length as the second pipe section 82. At least one water inlet is spacedly opened in the second pipe section 82, and at least one outlet end of the connecting pipe 1 is correspondingly connected to at least one water inlet.

[0050] Fix the second pipe section 82 to the first pipe section 81 and the third pipe section 83 respectively through a first flange structure 71 and a second flange structure 72, and install a temperature sensor 5 on the third pipe section 83.

[0051] In some embodiments, referring to Figure 1 , the steam demisting device further includes a first flange structure 71 and a second flange structure 72. The first pipe section 81 and the second pipe section 82 are connected through the first flange structure 71, and the third pipe section 83 and the second pipe section 82 are connected through the second flange structure 72.

[0052] In this embodiment, the second pipe section 82 can be hermetically connected to the first pipe section 81 and the third pipe section 83 respectively through the first flange structure 71 and the second flange structure 72, which can avoid steam leakage.

[0053] In some embodiments, referring to Figure 1 , the temperature sensor 5 is arranged at one end of the third pipe section 83 connected to the second pipe section 82.

[0054] Optionally, referring to Figure 1 , the first pipe section 81, the second pipe section 82, and the third pipe section 83 are arranged vertically from top to bottom, and the temperature sensor 5 is located above the nozzle 6.

[0055] In some embodiments, the control device described above can be implemented as a general-purpose processor, a programmable logic controller (PLC for short), a digital signal processor (DSP for short), an application specific integrated circuit (ASIC for short), a field-programmable gate array (FPGA for short), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any suitable combination thereof for performing the functions described in the present disclosure.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure and not to limit them; although the present disclosure has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that modifications can still be made to the specific implementation manners of the present disclosure or equivalent replacements can be made to some technical features, and they should all be covered within the scope of the technical solutions claimed by the present disclosure.

Claims

1. A steam descaling device, characterized in that: include: A steam pipe (8) configured to convey steam exhausted after tobacco leaf processing; A connecting pipe (1) having an inlet end and at least one outlet end, wherein the inlet end of the connecting pipe (1) is configured to be connected to a cooling water source; a nozzle (6), arranged at the outlet end of the connecting pipe (1), and configured to spray cooling water into the steam pipe (8) to reduce the temperature of the steam in the steam pipe (8); a temperature sensor (5), arranged on the steam pipe (8) downstream of the nozzle (6) in the steam delivery direction, and configured to detect an actual value of the steam temperature at the location; and A flow control valve (4) is arranged on the connecting pipe (1), the flow control valve (4) being connected to the temperature sensor (5) by signal and being configured to adjust its opening according to the actual value so as to adjust the flow of cooling water in the connecting pipe (1).

2. The steam descaling device according to claim 1, characterized in that: Also included is a control device, the control device comprising: a storage unit storing a correspondence between different initial values ​​of the steam temperature in the steam pipe (8) and different minimum values ​​of the opening of the flow control valve (4) required to reduce the actual value to a target value, wherein the initial value is the actual value before the flow control valve (4) is opened; and The control unit is signal-connected to the storage unit, the flow control valve (4) and the temperature sensor (5), and is configured to adjust the opening of the flow control valve (4) to the minimum value corresponding to the initial value according to the corresponding relationship.

3. The steam descaling device according to claim 1, characterized in that: The plurality of nozzles (6) are arranged side by side and at intervals along the steam conveying direction.

4. The steam descaling device according to claim 1, characterized in that: It also includes a filter (3) arranged on the connecting pipe (1), wherein the filter (3) is configured to filter impurities in the cooling water.

5. The steam descaling device according to claim 1, characterized in that: It also comprises an on-off control valve (2) arranged on the connecting pipe (1), wherein the on-off control valve (2) is configured to control the connection or disconnection between the connecting pipe (1) and a cooling water source.

6. The steam descaling device according to any one of claims 1 to 5, characterized in that: The steam pipe (8) comprises a first pipe section (81), a second pipe section (82) and a third pipe section (83) which are arranged in sequence along a steam conveying direction; the nozzle (6) is arranged in the second pipe section (82); and the second pipe section (82) is detachably installed between the first pipe section (81) and the third pipe section (83).

7. The steam descaling device according to claim 6, characterized in that: It also comprises a first flange structure (71) and a second flange structure (72), the first pipe section (81) and the second pipe section (82) being connected via the first flange structure (71), and the third pipe section (83) and the second pipe section (82) being connected via the second flange structure (72).

8. The steam descaling device according to claim 6, characterized in that: The temperature sensor (5) is arranged at one end of the third pipe section (83) connected to the second pipe section (82).

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