CN112342719B - Dye vat temperature adjusting method, heat exchange system and device - Google Patents
Dye vat temperature adjusting method, heat exchange system and device Download PDFInfo
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- CN112342719B CN112342719B CN202011222037.0A CN202011222037A CN112342719B CN 112342719 B CN112342719 B CN 112342719B CN 202011222037 A CN202011222037 A CN 202011222037A CN 112342719 B CN112342719 B CN 112342719B
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- 238000000034 method Methods 0.000 title claims abstract description 82
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 533
- 238000001816 cooling Methods 0.000 claims abstract description 51
- 238000010438 heat treatment Methods 0.000 claims abstract description 39
- 238000001514 detection method Methods 0.000 claims description 4
- 238000011946 reduction process Methods 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 238000004064 recycling Methods 0.000 claims description 2
- 239000000498 cooling water Substances 0.000 abstract description 5
- 230000000630 rising effect Effects 0.000 description 13
- 238000005485 electric heating Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
- D06B23/14—Containers, e.g. vats
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
- D06B23/20—Arrangements of apparatus for treating processing-liquids, -gases or -vapours, e.g. purification, filtration or distillation
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
- D06B23/20—Arrangements of apparatus for treating processing-liquids, -gases or -vapours, e.g. purification, filtration or distillation
- D06B23/22—Arrangements of apparatus for treating processing-liquids, -gases or -vapours, e.g. purification, filtration or distillation for heating
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Abstract
The invention discloses a dye vat temperature adjusting method, a heat exchange system and a device, wherein the heat exchange system for adjusting the dye vat temperature comprises a water tank and a heat exchanger, the heat exchanger is provided with a heat exchange medium inlet and a heat exchange medium outlet, a main water outlet pipeline is arranged between the water tank and the heat exchange medium inlet, a main water return pipeline is arranged between the water tank and the heat exchange medium outlet, and a circulating pump is arranged on the main water outlet pipeline; when the temperature of the dye vat water is raised, high-temperature water in the water tank flows into the heat exchanger to exchange heat with the dye vat water, and low-temperature water formed by heat exchange flows back to the water tank; when the dye vat water is cooled, the low-temperature water in the water tank flows into the heat exchanger to exchange heat with the dye vat water, and high-temperature water formed by heat exchange flows back into the water tank. The water tank is connected with the heat exchanger, so that the utilization of the recovered energy is more suitable for the dye vat process, the cooling water can be recycled in the cooling and heating processes of the whole dye vat process, and the energy is saved.
Description
Technical Field
The invention relates to the technical field of printing and dyeing, in particular to a dye vat temperature adjusting method, a heat exchange system and a heat exchange device.
Background
The technological process of the conventional dye vat is the combination of a heating process and a cooling process. The dye vat heating device in the prior art adopts steam or heat conduction oil and electric heating, a heat conduction medium is preheated through fuel to serve as a heat carrier (heat conduction oil or steam), and then the heat carrier releases energy to heat circulating water in the dye vat, so that the purpose of heating materials in the dye vat is achieved, and the dye vat heating device belongs to secondary energy heating. Meanwhile, the cooling water absorbing heat in the cooling process has a large amount of heat.
In order to realize energy conservation, some enterprises have studied to recycle the heat energy of cooling water in the cooling process. However, how to recycle the recovered cooling water in the processes of temperature reduction and temperature rise is still a problem to be solved.
Disclosure of Invention
The invention aims to provide a dye vat temperature adjusting method, a heat exchange system and a device, which are used for solving the problems in the prior art, so that the utilization of recovered energy is more suitable for a dye vat process, the energy can be recycled in the cooling and heating processes of the whole dye vat process, and the energy is saved.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a heat exchange system for dye vat temperature adjustment, which comprises a water tank and a heat exchanger, wherein the heat exchanger is provided with a heat exchange medium inlet and a heat exchange medium outlet;
when heat exchange is needed to be carried out on dye vat water in a heat exchanger to enable the dye vat water to be heated, high-temperature water in the water tank flows into the heat exchanger to carry out heat exchange with the dye vat water, and low-temperature water formed by heat exchange flows back to the water tank; when the dye vat water needs to be cooled, the low-temperature water in the water tank flows into the heat exchanger to exchange heat with the dye vat water, and the heat exchange forms high-temperature water to flow back into the water tank.
Preferably, the water tank comprises a high-temperature water tank, a medium-temperature water tank and a low-temperature water tank which are arranged in parallel, and a first water outlet valve, a second water outlet valve and a third water outlet valve are respectively arranged between the high-temperature water tank, the medium-temperature water tank, the low-temperature water tank and the main water outlet pipeline; a first water return valve, a second water return valve and a third water return valve are respectively arranged among the high-temperature water tank, the medium-temperature water tank, the low-temperature water tank and the main water return pipeline;
when heat exchange is needed to be carried out on dye vat water in a heat exchanger to heat the dye vat water, firstly, medium-temperature water in a medium-temperature water tank flows into the heat exchanger to carry out heat exchange with the dye vat water, and the medium-temperature water after heat exchange is recovered to a low-temperature water tank; then, enabling high-temperature water in the high-temperature water tank to flow into the heat exchanger to exchange heat with the dye vat water, and recovering the high-temperature water after heat exchange into the medium-temperature water tank;
when the dye vat water needs to be cooled, firstly, the medium temperature water in a medium temperature water tank flows into the heat exchanger to exchange heat with the dye vat water, and the medium temperature water after heat exchange is recovered to the high temperature water tank; then the low-temperature water in the low-temperature water tank flows into the heat exchanger to exchange heat with the dye vat water, and the low-temperature water after heat exchange is recovered to the medium-temperature water tank.
Preferably, water tanks with different temperature gradients are further arranged and are connected in parallel with the high-temperature water tank, the medium-temperature water tank and the low-temperature water tank.
The invention also provides a dye vat temperature adjusting device, which comprises a heat exchange system and a supplementary heat exchange system, wherein the heat exchange system is used for adjusting the temperature of the dye vat, the supplementary heat exchange system comprises a heating device and a cooling device, the heat exchanger also comprises a dye vat water outlet, the dye vat is provided with a water inlet, the heating device is arranged between the dye vat water outlet and the water inlet, and the cooling device is a bypass branch which is arranged at the heat exchange medium inlet and is used for introducing external cold water.
Preferably, the dye vat control device is further included, a heat exchange valve is further arranged on the main water outlet pipeline at the heat exchange medium inlet end, the heat exchange valve is electrically connected with the dye vat control device, and the dye vat control device adjusts the heating and cooling speeds of dye vat water by controlling the opening and closing of the heat exchange valve;
the heating device is electrically connected with the dye vat control device, and the dye vat control device adjusts the temperature rise speed of the dye vat water by controlling the on-off or power of a switch of the heating device;
and a cooling valve is arranged on the bypass branch, the cooling valve is electrically connected with the dye vat control device, and the dye vat control device adjusts the cooling speed of the dye vat water by controlling the opening and closing of the cooling valve.
Preferably, the heating device is a gas heater.
The invention also provides a dye vat temperature adjusting method, which comprises the following steps,
the temperature rise process is as follows:
1) enabling medium-temperature water in the medium-temperature water tank to flow into a heat exchanger to exchange heat with dye vat water, and recycling the medium-temperature water after heat exchange into the low-temperature water tank;
2) enabling high-temperature water in a high-temperature water tank to flow into the heat exchanger to exchange heat with the dye vat water, and recovering the high-temperature water after heat exchange into the medium-temperature water tank;
3) finally, heating the dye vat water through a heating device until the temperature rise process is finished;
the cooling process is as follows:
1) enabling medium-temperature water in a medium-temperature water tank to flow into the heat exchanger to exchange heat with the dye vat water, and recovering the medium-temperature water after heat exchange into the high-temperature water tank;
2) enabling low-temperature water in the low-temperature water tank to flow into the heat exchanger to exchange heat with the dye vat water, and recovering the low-temperature water after heat exchange into the medium-temperature water tank;
3) and finally, directly introducing external cold water into the heat exchanger to exchange heat with the dye vat water, and recovering the cold water after heat exchange into the low-temperature water tank until the temperature reduction process is finished.
Preferably, a temperature-rise target temperature threshold or a temperature-fall target temperature threshold in each step is preset, and in the temperature-rise process, when the temperature detection device detects that the dye vat water reaches the temperature-rise target temperature threshold, the next step is carried out, and a water outlet valve of a corresponding water tank and a water return valve of a lower-level temperature gradient water tank in the next step are controlled to be opened; in the cooling process, when the temperature detection device detects that the dye vat water reaches the cooling target temperature threshold value, the next step is carried out, and the water outlet valve of the corresponding water tank and the water return valve of the high-grade temperature gradient water tank in the next step are controlled to be opened.
Preferably, the temperature-rise target temperature thresholds in the step 1) and the step 2) in the temperature-rise process are respectively 50 ℃ and 70 ℃; in the cooling process, the cooling target temperature thresholds in the step 1) and the step 2) are respectively 100 ℃ and 70 ℃; the medium-temperature water at a temperature of between 65 ℃ and less than 80 ℃ and the high-temperature water at a temperature of between 80 ℃ and less than 95 ℃.
Preferably, in step 1), step 2) of the temperature increasing process and step 1), step 2) of the temperature decreasing process, when the corresponding target temperature threshold is not reached but the liquid level in the corresponding water tank is lower than the preset value, the next step is performed.
Compared with the prior art, the invention has the following technical effects:
1. through setting up the water tank and linking to each other with heat exchanger, make the water homoenergetic after the heat exchange in intensification and the cooling process retrieve and recycle, make the utilization of recovered energy be applicable to the dye vat technology more, cooling water can carry out cyclic utilization in the cooling of whole dye vat technology and intensification process, the energy can be saved.
2. The water tank is set into the high-temperature water tank, the medium-temperature water tank and the low-temperature water tank which are connected in parallel, so that the recovered water can exchange heat for the dye vat water in the heat exchanger according to the temperature grade stage, the water after heat exchange is recovered into the water tank with the lower temperature gradient in the temperature rising process, the water after heat exchange is recovered into the water tank with the higher temperature gradient in the temperature lowering process, the dye vat water in the heat exchanger is subjected to heat exchange stage by stage, the energy utilization rate of the recovered water is higher, meanwhile, the utilization of the recovered energy can be guaranteed to be more suitable for the dye vat process, the slow temperature rising and temperature lowering in the whole process is guaranteed, and the temperature rising and temperature lowering speed is guaranteed to meet the process requirements.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic structural view of a dye vat temperature adjusting device;
wherein, 1, a water tank; 1.1, a high-temperature water tank; 1.2, a medium-temperature water tank; 1.3, a low-temperature water tank; 2. a heat exchanger; 2.1, a heat exchange medium inlet; 2.2, a heat exchange medium outlet; 2.3, dye vat water inlet; 2.4, a dye vat water outlet; 3. a main water outlet pipeline; 4. a primary water return line; 5. a circulation pump; 6.1, a first water outlet valve; 6.2, a second water outlet valve; 6.3, a third water outlet valve; 7.1, a first water return valve; 7.2, a second water return valve; 7.3, a third water return valve; 8. a heating device; 9. a dye vat; 9.1, a water inlet; 9.2, a water outlet; 10. a heat exchange valve; 11. cooling the valve; 12. a temperature measuring device.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a dye vat temperature adjusting method, a heat exchange system and a device, which are used for solving the problems in the prior art, so that the utilization of recovered energy is more suitable for a dye vat process, the energy can be recycled in the cooling and heating processes of the whole dye vat process, and the energy is saved.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Please refer to fig. 1.
Example one
The embodiment provides a heat exchange system for dye vat temperature adjustment, which comprises a water tank 1 and a heat exchanger 2, wherein the heat exchanger 2 is provided with a heat exchange medium inlet 2.1 and a heat exchange medium outlet 2.2, a main water outlet pipeline 3 is arranged between the water tank 1 and the heat exchange medium inlet 2.1, a main water return pipeline 4 is arranged between the water tank 1 and the heat exchange medium outlet 2.2, the main water outlet pipeline 3 is provided with a circulating pump 5, and the number of the water tanks 1 is one;
when heat exchange needs to be carried out on dye vat water in the heat exchanger 2 to ensure that the dye vat water is heated, the circulating pump 5 is started, high-temperature water in the water tank 1 flows into the heat exchanger 2 to carry out heat exchange with the dye vat water, low-temperature water formed after heat exchange flows back into the water tank 1 through the main water return pipeline 4 to carry out self-circulation until the water temperature in the water tank 1 is close to that of the dye vat water;
when the dye vat water needs to be cooled, the circulating pump 5 is started, low-temperature water formed by the heat exchange backflow in the water tank 1 flows into the heat exchanger 2 to exchange heat with the dye vat water, and the low-temperature water after heat exchange flows back into the water tank 1 through the main water return pipeline 4 to perform self circulation until the water temperature in the water tank 1 is close to that of the dye vat water.
Example two
The embodiment provides a heat exchange system for dye vat temperature adjustment, which comprises a water tank 1 and a heat exchanger 2, wherein the heat exchanger 2 is provided with a heat exchange medium inlet 2.1 and a heat exchange medium outlet 2.2, a main water outlet pipeline 3 is arranged between the water tank 1 and the heat exchange medium inlet 2.1, a main water return pipeline 4 is arranged between the water tank 1 and the heat exchange medium outlet 2.2, the main water outlet pipeline 3 is provided with a circulating pump 5, and the water tank 1 comprises a high-temperature water tank 1.1 and a low-temperature water tank 1.3;
when heat exchange is needed to be carried out on dye vat water in the heat exchanger 2 to heat the dye vat water, the circulating pump 5 is started, high-temperature water in the high-temperature water tank 1.1 flows into the heat exchanger 2 to carry out heat exchange with the dye vat water, low-temperature water formed after heat exchange flows back into the low-temperature water tank 1.3 through the main water return pipeline 4, after the water in the high-temperature water tank 1.1 is emptied, if the water temperature in the low-temperature water tank 1.3 is higher than that of the dye vat water at the moment, water in the low-temperature water tank 1.3 flows into the heat exchanger 2 to carry out heat exchange, and the water after heat exchange flows back into the low-temperature water tank 1.3 to carry out self-circulation until the water temperature in the low-temperature water tank 1.3 is close to that of the dye vat water;
when the dye vat water needs to be cooled, the circulating pump 5 is started, low-temperature water in the low-temperature water tank 1.3 flows into the heat exchanger 2 to exchange heat with the dye vat water, high-temperature water formed after heat exchange flows into the high-temperature water tank 1.1 through the main water return pipeline 4, after water in the low-temperature water tank 1.3 is emptied, if the water temperature in the high-temperature water tank 1.1 is lower than that of the dye vat water, the water in the high-temperature water tank 1.1 flows into the heat exchanger 2 to exchange heat with the dye vat water until the water temperature in the high-temperature water tank 1.1 is close to that of the dye vat water.
EXAMPLE III
The embodiment provides a heat exchange system for dye vat temperature adjustment, which comprises a water tank 1 and a heat exchanger 2, wherein the heat exchanger 2 is provided with a heat exchange medium inlet 2.1 and a heat exchange medium outlet 2.2, a main water outlet pipeline 3 is arranged between the water tank 1 and the heat exchange medium inlet 2.1, a main water return pipeline 4 is arranged between the water tank 1 and the heat exchange medium outlet 2.2, and the main water outlet pipeline 3 is provided with a circulating pump 5; the water tank 1 comprises a high-temperature water tank 1.1, a medium-temperature water tank 1.2 and a low-temperature water tank 1.3 which are arranged in parallel and are respectively used for containing high-temperature water, medium-temperature water and low-temperature water, and a first water outlet valve 6.1, a second water outlet valve 6.2 and a third water outlet valve 6.3 are respectively arranged between the high-temperature water tank 1.1, the medium-temperature water tank 1.2 and the low-temperature water tank 1.3 and the main water outlet pipeline 3; a first water return valve 7.1, a second water return valve 7.2 and a third water return valve 7.3 are respectively arranged between the high-temperature water tank 1.1, the medium-temperature water tank 1.2, the low-temperature water tank 1.3 and the main water return pipeline 4;
the first water outlet valve 6.1, the second water outlet valve 6.2, the third water outlet valve 6.3, the first water return valve 7.1, the second water return valve 7.2 and the third water return valve 7.3 are all in a closed state. When heat exchange needs to be carried out on dye vat water in the heat exchanger 2 to enable the dye vat water to be heated, the second water outlet valve 6.2 and the third water return valve 7.3 are firstly opened, the circulating pump 5 is started, medium-temperature water in the medium-temperature water tank 1.2 flows into the heat exchanger 2 to carry out heat exchange with the dye vat water, and the medium-temperature water after heat exchange flows into the low-temperature water tank 1.3 through the main water return pipeline 4 and the third water return valve 7.3; after the temperature of the dye vat water is raised to a certain temperature through the process, the first water outlet valve 6.1 and the second water return valve 7.2 are opened, the second water outlet valve 6.2 and the third water return valve 7.3 are closed at the same time, high-temperature water in the high-temperature water tank 1.1 flows into the heat exchanger 2 to continuously exchange heat with the dye vat water, and the high-temperature water after heat exchange is recovered into the medium-temperature water tank 1.2 to be stored;
the first water outlet valve 6.1, the second water outlet valve 6.2, the third water outlet valve 6.3, the first water return valve 7.1, the second water return valve 7.2 and the third water return valve 7.3 are all in a closed state. When the dye vat water needs to be cooled, the second water outlet valve 6.2 and the first water return valve 7.1 are firstly opened, the circulating pump 5 is started, the medium-temperature water in the medium-temperature water tank 1.2 flows into the heat exchanger 2 to exchange heat with the dye vat water, and the medium-temperature water after heat exchange flows into the high-temperature water tank 1.1 through the main water return pipeline 4 and the first water return valve 7.1; after the dye vat water is cooled to a certain temperature through the process, the third water outlet valve 6.3 and the second water return valve 7.2 are opened, the second water outlet valve 6.2 and the first water return valve 7.1 are closed at the same time, the low-temperature water in the low-temperature water tank 1.3 flows into the heat exchanger 2 to exchange heat with the dye vat water, and the low-temperature water after heat exchange is recovered into the medium-temperature water tank 1.2.
Further, in this embodiment, water tanks with different temperature gradients may be further arranged to be connected in parallel with the high-temperature water tank 1.1, the medium-temperature water tank 1.2, and the low-temperature water tank 1.3, that is, four, five, or more water tanks may be connected in parallel according to actual conditions, and water with different temperatures may be arranged in different water tanks respectively, and the temperature raising and lowering process may be implemented with reference to the temperature raising and lowering process with three water tanks, which is not described herein again.
Example four
The embodiment provides a dye vat temperature adjusting device, which comprises a heat exchange system and a supplementary heat exchange system for dye vat temperature adjustment in the first to third embodiments, wherein the supplementary heat exchange system comprises a heating device 8 and a cooling device, the heat exchanger 2 further comprises a dye vat water inlet 2.3 and a dye vat water outlet 2.4, the dye vat 9 is provided with a water inlet 9.1 and a water outlet 9.2, the heating device 8 is arranged between the dye vat water outlet 2.4 and the water inlet 9.1, the heating device 8 is preferably a gas heater in the embodiment, of course, a direct heating form by other energy sources such as electric heating can be selected, and the cooling device is a bypass branch which is arranged at the heat exchange medium inlet 2.1 and is used for introducing external cold water.
Further, the dye vat control device is further included, a heat exchange valve 10 is further arranged on the main water outlet pipeline 3 at the end 2.1 of the heat exchange medium inlet, the heat exchange valve 10 is electrically connected with the dye vat control device, and the dye vat control device adjusts the heating and cooling speeds of the dye vat water by controlling the opening and closing of the heat exchange valve 10;
the heating device 8 is electrically connected with a dye vat control device, and the dye vat control device adjusts the heating speed of the dye vat water by controlling the on-off or power of a switch of the heating device 8;
and a cooling valve 11 is arranged on the bypass branch, the cooling valve 11 is electrically connected with a dye vat control device, and the dye vat control device adjusts the temperature reduction speed of the dye vat water by controlling the opening and closing of the cooling valve 11.
Furthermore, temperature measuring devices 12 are arranged at the high-temperature water tank 1.1, the medium-temperature water tank 1.2, the low-temperature water tank 1.3 and the dye vat water outlet 2.4 of the heat exchanger 2, and are used for detecting the water temperatures at corresponding positions in real time so as to accurately control the temperature change of the temperature rising and reducing process.
EXAMPLE five
The embodiment provides a dye vat temperature adjusting method, which adopts the dye vat temperature adjusting device in the fourth embodiment, wherein a heat exchange system for adjusting the dye vat temperature adopts the system in the third embodiment, and comprises the following steps,
in the temperature rising process and in the initial state, the first water outlet valve 6.1, the second water outlet valve 6.2, the third water outlet valve 6.3, the first water return valve 7.1, the second water return valve 7.2 and the third water return valve 7.3 are all closed:
1) before the temperature of the dye vat water is increased to 50 ℃ from room temperature, the dye vat water is heated by medium-temperature water in a medium-temperature water tank 1.2, a second water outlet valve 6.2 and a third water return valve 7.3 are opened, a circulating pump 5 is started, medium-temperature water at 65-80 ℃ in the medium-temperature water tank 1.2 flows into a heat exchanger 2 to exchange heat with the dye vat water, and the medium-temperature water after heat exchange flows into a low-temperature water tank 1.3 through a main water return pipeline 4 and the third water return valve 7.3. In the process, the opening and closing of the heat exchange valve 10 are controlled by the dye vat control device, so that the temperature rising speed, the water temperature and the like in the temperature rising process meet the process requirements.
2) When the temperature of the dye vat water rises to be close to or reach 50 ℃, or the water level in the medium temperature water tank 1.2 is too low and is lower than a preset value, the first water outlet valve 6.1 and the second water return valve 7.2 are opened, meanwhile, the second water outlet valve 6.2 and the third water return valve 7.3 are closed, high temperature water at 80-95 ℃ in the high temperature water tank 1.1 flows into the heat exchanger 2 to continue to exchange heat with the dye vat water, the high temperature water after heat exchange still has the water temperature of 65-80 ℃, and the high temperature water is recycled into the medium temperature water tank 1.2 to be stored. In the process, the opening and closing of the heat exchange valve 10 are controlled by the dye vat control device, so that the temperature rising speed, the water temperature and the like in the temperature rising process meet the process requirements.
3) When the temperature of the dye vat water approaches or reaches 70 ℃, or the water level in the high-temperature water tank 1.1 is too low and is lower than a preset value, the gas heater is ignited to heat the dye vat water, the circulating pump 5 stops working, the first water outlet valve 6.1 and the second water return valve 7.2 are closed at the same time, and the gas heater is controlled by the dye vat control device to be switched on or switched off in power, so that the heating speed, the water temperature and the like in the heating process meet the process requirements until the heating process is finished;
in the cooling process, in the initial state, the first water outlet valve 6.1, the second water outlet valve 6.2, the third water outlet valve 6.3, the first water return valve 7.1, the second water return valve 7.2 and the third water return valve 7.3 are all closed:
1) when the temperature of the dye vat is reduced to 100 ℃ from 130 ℃ at the highest temperature, the dye vat water is cooled by the medium-temperature water in the medium-temperature water tank 1.2, the second water outlet valve 6.2 and the first water return valve 7.1 are opened, the circulating pump 5 is started, the medium-temperature water at 65-80 ℃ in the medium-temperature water tank 1.2 flows into the heat exchanger 2 to exchange heat with the dye vat water, the medium-temperature water after heat exchange is heated to 80-95 ℃, and flows into the high-temperature water tank 1.1 through the main water return pipeline 4 and the first water return valve 7.1. In the process, the opening and closing of the heat exchange valve 10 are controlled by the dye vat control device, so that the cooling speed, the water temperature and the like in the cooling process meet the process requirements.
2) When the temperature of the dye vat water drops to be close to or below 100 ℃, or the water level in the medium temperature water tank 1.2 is too low and is lower than a preset value, the third water outlet valve 6.3 and the second water return valve 7.2 are opened, meanwhile, the second water outlet valve 6.2 and the first water return valve 7.1 are closed, low temperature water at about 40 ℃ in the low temperature water tank 1.3 flows into the heat exchanger 2 to continue to carry out heat exchange with the dye vat water, the temperature of the low temperature water after heat exchange is raised to 65-80 ℃, and the low temperature water is recycled into the medium temperature water tank 1.2 to be stored. In the process, the opening and closing of the heat exchange valve 10 are controlled by the dye vat control device, so that the cooling speed, the water temperature and the like in the cooling process meet the process requirements.
3) When the temperature of the dye vat water is reduced to be close to or reach 70 ℃, the circulating pump 5 stops working, meanwhile, the third water outlet valve 6.3 and the second water return valve 7.2 are closed, the cooling valve 11 is opened, external cold water is directly introduced into the heat exchanger 2 to exchange heat with the dye vat water, and the cold water after heat exchange is recycled into the low-temperature water tank 1.3 until the temperature reduction process is finished; in the process, the cooling valve 11 is controlled to be opened and closed by the dye vat control device, so that the cooling speed, the water temperature and the like in the cooling process meet the process requirements.
The preset values of the water level mentioned in the steps 2) and 3) of the heating process and the steps 2) and 3) of the cooling process are preset water level height values according to actual conditions, and when the water level height is lower than the water level height, the water in the water tank cannot meet the requirement of heating the dye vat water.
The temperature parameters involved in the temperature raising process and the temperature lowering process can be adjusted accordingly according to actual conditions, and the specific temperature parameters do not form limitations on the present invention.
Further, in the temperature rising process and the temperature lowering process, the processes of automatically controlling the opening of the valve and the like can be realized by presetting the temperature rising target temperature threshold or the temperature lowering target temperature threshold in each step. In the temperature rising process, when the temperature measuring device 12 detects that the dye vat water reaches the temperature rising target temperature threshold value, the next step is carried out, and the water outlet valve of the corresponding water tank and the water return valve of the water tank with the lower temperature gradient in the next step are controlled to be opened; in the cooling process, when the temperature measuring device 12 detects that the dye vat water reaches the cooling target temperature threshold value, the next step is carried out, and the water outlet valve of the corresponding water tank and the water return valve of the water tank with the higher temperature gradient in the next step are controlled to be opened.
Further, in the process of performing heat exchange by using water in the water tank 1 in the step 1) and the step 2) in the temperature rise process, a low-power auxiliary heating mode can be performed by using a gas heater.
The adaptation according to the actual needs is within the scope of the invention.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (9)
1. The utility model provides a heat transfer system for dye vat temperature control which characterized in that: the heat exchanger is provided with a heat exchange medium inlet and a heat exchange medium outlet, a main water outlet pipeline is arranged between the water tank and the heat exchange medium inlet, a main water return pipeline is arranged between the water tank and the heat exchange medium outlet, and a circulating pump is arranged on the main water outlet pipeline; the water tank comprises a high-temperature water tank, a medium-temperature water tank and a low-temperature water tank which are arranged in parallel, and a first water outlet valve, a second water outlet valve and a third water outlet valve are respectively arranged between the high-temperature water tank, the medium-temperature water tank, the low-temperature water tank and the main water outlet pipeline; a first water return valve, a second water return valve and a third water return valve are respectively arranged among the high-temperature water tank, the medium-temperature water tank, the low-temperature water tank and the main water return pipeline;
when heat exchange is needed to be carried out on dye vat water in a heat exchanger to heat the dye vat water, firstly, medium-temperature water in a medium-temperature water tank flows into the heat exchanger to carry out heat exchange with the dye vat water, and the medium-temperature water after heat exchange is recovered to a low-temperature water tank; then, enabling high-temperature water in the high-temperature water tank to flow into the heat exchanger to exchange heat with the dye vat water, and recovering the high-temperature water after heat exchange into the medium-temperature water tank;
when the dye vat water needs to be cooled, firstly, the medium temperature water in a medium temperature water tank flows into the heat exchanger to exchange heat with the dye vat water, and the medium temperature water after heat exchange is recovered to the high temperature water tank; then the low-temperature water in the low-temperature water tank flows into the heat exchanger to exchange heat with the dye vat water, and the low-temperature water after heat exchange is recovered to the medium-temperature water tank.
2. The heat exchange system for dye vat temperature regulation of claim 1, wherein: and water tanks with different temperature gradients are also arranged and connected in parallel with the high-temperature water tank, the medium-temperature water tank and the low-temperature water tank.
3. A dye vat temperature adjusting device is characterized in that: comprising a heat exchange system for dye vat temperature regulation according to claim 1 or 2 and a supplementary heat exchange system, said supplementary heat exchange system comprising a heating device and a cooling device, said heat exchanger further comprising a dye vat water outlet, said dye vat having a water inlet, said heating device being arranged between said dye vat water outlet and said water inlet, said cooling device being a bypass branch arranged at said heat exchange medium inlet for passing external cold water.
4. The dye vat temperature adjusting apparatus according to claim 3, wherein: the dye vat control device is used for adjusting the heating and cooling speeds of dye vat water by controlling the opening and closing of the heat exchange valve;
the heating device is electrically connected with the dye vat control device, and the dye vat control device adjusts the temperature rise speed of the dye vat water by controlling the on-off or power of a switch of the heating device;
and a cooling valve is arranged on the bypass branch, the cooling valve is electrically connected with the dye vat control device, and the dye vat control device adjusts the cooling speed of the dye vat water by controlling the opening and closing of the cooling valve.
5. The dye vat temperature adjusting apparatus according to claim 3 or 4, wherein: the heating device is a gas heater.
6. A dye vat temperature adjusting method using the dye vat temperature adjusting apparatus according to any one of claims 3 to 5, characterized in that: comprises the following steps of (a) carrying out,
the temperature rise process is as follows:
1) enabling medium-temperature water in the medium-temperature water tank to flow into a heat exchanger to exchange heat with dye vat water, and recycling the medium-temperature water after heat exchange into the low-temperature water tank;
2) enabling high-temperature water in a high-temperature water tank to flow into the heat exchanger to exchange heat with the dye vat water, and recovering the high-temperature water after heat exchange into the medium-temperature water tank;
3) finally, heating the dye vat water through a heating device until the temperature rise process is finished;
the cooling process is as follows:
1) enabling medium-temperature water in a medium-temperature water tank to flow into the heat exchanger to exchange heat with the dye vat water, and recovering the medium-temperature water after heat exchange into the high-temperature water tank;
2) enabling low-temperature water in the low-temperature water tank to flow into the heat exchanger to exchange heat with the dye vat water, and recovering the low-temperature water after heat exchange into the medium-temperature water tank;
3) and finally, directly introducing external cold water into the heat exchanger to exchange heat with the dye vat water, and recovering the cold water after heat exchange into the low-temperature water tank until the temperature reduction process is finished.
7. The dye vat temperature adjusting method according to claim 6, characterized in that: presetting a temperature-rising target temperature threshold or a temperature-reducing target temperature threshold in each step, and in the temperature-rising process, when the temperature detection device detects that the dye vat water reaches the temperature-rising target temperature threshold, carrying out the next step, and controlling a water outlet valve of a corresponding water tank and a water return valve of a lower-level temperature gradient water tank in the next step to be opened; in the cooling process, when the temperature detection device detects that the dye vat water reaches the cooling target temperature threshold value, the next step is carried out, and the water outlet valve of the corresponding water tank and the water return valve of the high-grade temperature gradient water tank in the next step are controlled to be opened.
8. The dye vat temperature adjusting method according to claim 7, characterized in that: in the temperature rise process, the temperature rise target temperature thresholds in the step 1) and the step 2) are respectively 50 ℃ and 70 ℃; in the cooling process, the cooling target temperature thresholds in the step 1) and the step 2) are respectively 100 ℃ and 70 ℃; the medium-temperature water at a temperature of between 65 ℃ and less than 80 ℃ and the high-temperature water at a temperature of between 80 ℃ and less than 95 ℃.
9. The dye vat temperature adjusting method according to claim 6, characterized in that: in the step 1) and the step 2) of the temperature increasing process and the step 1) and the step 2) of the temperature decreasing process, when the corresponding target temperature threshold value is not reached but the liquid level in the corresponding water tank is lower than the preset value, the next step is carried out.
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| CN103255592A (en) * | 2013-05-24 | 2013-08-21 | 苏州如意多保节能环保科技有限公司 | Circulating and recycling system for intermediate-temperature / high-temperature water of overflow machines |
| CN103526487A (en) * | 2013-10-29 | 2014-01-22 | 张基忠 | Energy-efficient and water-saving overflow dyeing equipment and heat flow control method thereof |
| CN104389131A (en) * | 2014-11-18 | 2015-03-04 | 苏州维度丝绸有限公司 | Dyeing machine |
| CN106468003A (en) * | 2015-08-15 | 2017-03-01 | 杭州东霖染整机械有限公司 | Energy-saving and emission-reduction heat-exchange device for fabric dyeing machine |
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| CN103255592A (en) * | 2013-05-24 | 2013-08-21 | 苏州如意多保节能环保科技有限公司 | Circulating and recycling system for intermediate-temperature / high-temperature water of overflow machines |
| CN103526487A (en) * | 2013-10-29 | 2014-01-22 | 张基忠 | Energy-efficient and water-saving overflow dyeing equipment and heat flow control method thereof |
| CN104389131A (en) * | 2014-11-18 | 2015-03-04 | 苏州维度丝绸有限公司 | Dyeing machine |
| CN106468003A (en) * | 2015-08-15 | 2017-03-01 | 杭州东霖染整机械有限公司 | Energy-saving and emission-reduction heat-exchange device for fabric dyeing machine |
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