Strong-heat-preservation continuous discharging and recycling system

Abstract

The utility model discloses a strong heat preservation continuous drainage recycling system which comprises a continuous drainage recycling device, a steam leading-in pipe, a steam leading-out pipe and a continuous drainage leading-in pipe, the continuous drainage recycling device comprises a shell, a filtering assembly, a heat preservation assembly and a control assembly, and the heat preservation assembly comprises an electromagnetic induction coil, a first heat preservation layer, a heat insulation layer and a second heat preservation layer; the electromagnetic induction coil is controlled by the control assembly and used for conducting induction heating on the shell. A first temperature sensor is arranged between the shell and the first heat preservation layer, a second temperature sensor is arranged between the heat insulation layer and the second heat preservation layer, and the control assembly can control the working state of the electromagnetic induction coil according to a real-time temperature feedback signal of the first temperature sensor, so that the device is helped to start pipe heating work before operation, and the needed pipe heating time is shortened; the cost is saved; the control assembly can also monitor the heat preservation condition according to a real-time temperature feedback signal of the second temperature sensor, and workers can conveniently overhaul or replace the heat preservation assembly in time.

Description

Technical Field

[0001] The utility model relates to the field of waste heat recovery, in particular to a strong heat-insulating continuous recovery device. Background Art

[0002] Boiler blowdown is a major loss in boiler operation. In order to control the quality of boiler water and steam, two parts of boiler wastewater must be discharged. The first part is continuous blowdown, also known as surface blowdown, which requires continuous discharge of part of the boiler water from the part with the highest salt and alkali concentration to reduce the salt content, alkali content, silica content and suspended slag content in the boiler water. The second part is periodic blowdown, also known as bottom blowdown, which needs to be discharged from the bottom of the boiler regularly.

[0003] The purpose of sewage discharge is to protect the quality of boiler water so that the boiler can operate safely and stably for a long time. However, directly discharging continuous sewage and fixed sewage will not only lose heat and affect the efficiency of the boiler, but also cause thermal pollution to the environment.

[0004] The existing devices for recycling continuous drainage generally adopt some conventional insulation methods in order to reduce heat loss during the recycling process. The conventional insulation layer is a certain thickness of insulation asbestos covering the outer wall of the recovery device, and the insulation asbestos is covered and fixed with a thin stainless steel plate. Before the device is officially used, it is necessary to first introduce high-temperature and high-pressure steam into the device to warm up the device and its connected pipes. The temperature inside the pipes and the device is in a slowly rising state, and it takes a certain amount of time to rise to the required temperature. Conventional insulation can only insulate the device to a certain extent, but it cannot play any auxiliary role in the warm-up state before the device is officially put into operation. More high-temperature and high-pressure steam needs to be introduced, and the warm-up time is long, which is not conducive to the device being put into operation as soon as possible. Utility Model Content

[0005] In view of the above-mentioned problems, the utility model proposes a strong insulation continuous row recovery system. The insulation components and control components arranged on the continuous row recovery device can play an auxiliary role during the pipe heating period before the system is officially put into operation, reducing the high-temperature and high-pressure steam wasted for pipe heating, saving the cost of steam waste, and shortening the time required for pipe heating, helping the device to be put into use as soon as possible.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A strong insulation continuous row recovery system comprises a continuous row recovery device, a steam inlet pipe, a steam outlet pipe and a continuous row water inlet pipe, the continuous row recovery device comprises a shell, a filter component arranged in the shell and a heat preservation component wrapped outside the shell, the filter component is used to filter steam, and also comprises a control component, the heat preservation component comprises an electromagnetic induction coil, a first heat preservation layer, a thermal insulation layer and a second heat preservation layer wrapped outside the shell in sequence; the electromagnetic induction coil is controlled by the control component and is used to inductively heat the shell; a temperature sensor 1 is provided between the shell and the first heat preservation layer, and a temperature sensor 2 is provided between the thermal insulation layer and the second heat preservation layer, which are respectively used to sense the surface temperature of the shell and the thermal insulation layer, and feed back the signal to the control component, the control component is used to control the operation of the electromagnetic induction coil, and can be connected to the power plant control system.

[0008] In one embodiment of the present invention, the operating frequency of the electromagnetic induction coil is 10 kHz-100 kHz.

[0009] In one embodiment of the present invention, the first thermal insulation layer is made of aluminum silicate fiber material.

[0010] In one embodiment of the present invention, a plurality of evenly arranged empty grooves are disposed in the middle of the first thermal insulation layer.

[0011] In one embodiment of the present invention, the thermal insulation layer is an aerogel composite thermal insulation material.

[0012] In one embodiment of the present invention, the second insulation layer is a foamed ceramic insulation layer.

[0013] In one embodiment of the utility model, the first thermal insulation layer, the heat insulating layer and the second thermal insulation layer are an integrated installation structure, which is divided into a first installation component and a second installation component. The first installation component and the second installation component are hinged on one side and connected by bolts on the other side, and can be detachably mounted outside the shell.

[0014] In one embodiment of the present invention, the hinged joint of the first mounting component and the second mounting component is located directly above the housing, and the bolted joint is located directly below the housing.

[0015] The beneficial effects of the utility model are as follows: the temperature sensor 1 and the temperature sensor 2 arranged in the continuous recovery device can respectively monitor the temperature of the shell and the surface of the insulation layer in real time and feed back the data to the control component. The control component can control the working state of the electromagnetic induction coil according to the real-time temperature feedback signal of the temperature sensor 1, thereby helping the device to warm up the pipes before starting operation, shortening the required warming time, reducing the use of high-grade steam, and saving costs; at the same time, the control component can also monitor the insulation condition of the device according to the real-time temperature feedback signal of the temperature sensor 2, so as to facilitate the staff to timely inspect or replace the insulation component. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the continuous recovery device, electromagnetic induction coil and control assembly of this embodiment;

[0017] Figure 2 This is a schematic diagram of the closed connection state of the thermal insulation assembly of this embodiment;

[0018] Figure 3 2 is a schematic diagram showing the first mounting portion and the second mounting portion of the thermal insulation assembly of this embodiment being open;

[0019] Figure 4 It is a schematic diagram of the connection between the continuous recovery device of this embodiment and the steam inlet pipe, the steam outlet pipe, the continuous water discharge inlet pipe and the steam main pipe.

[0020] The reference numerals in the figures are:

[0021] 1. Shell, 11. Steam inlet, 12. Steam outlet, 2. Insulation component, 21. Electromagnetic induction coil, 22. First insulation layer, 23. Heat insulation layer, 24. Second insulation layer, 3. Control component, 4. Temperature sensor 1, 5. Temperature sensor 2, 6. First installation component, 7. Second installation component, 8. Steam inlet pipe, 9. Steam outlet pipe, 10. Drainage inlet pipe, 11. Steam main pipe. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] In the description of this application, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] The utility model is described in detail below in conjunction with the accompanying drawings.

[0026] Example

[0027] like Figure 1-4 As shown, a strong heat preservation continuous row recovery system includes a continuous row recovery device, a steam inlet pipe 8, a steam outlet pipe 9 and a continuous row water inlet pipe 10.

[0028] One end of the steam inlet pipe 8 is used to introduce the original high-temperature heat source steam in the factory, and the other end is connected to the continuous recovery device, and the high-temperature heat source steam is introduced from the steam main pipe 11 into the continuous recovery device. One end of the continuous drainage inlet pipe 10 is used to introduce the boiler continuous drainage, and the other end is connected to the steam inlet pipe 8, so that the continuous drainage is introduced into the steam inlet pipe 8 after coming out of the boiler drum and mixed with the high-temperature heat source steam. After the high-temperature heat source steam enthalpy is compensated, it is completely vaporized, and the impurities originally dissolved in the continuous drainage are free in the steam to form mixed steam, which enters the continuous recovery device together. One end of the steam outlet pipe 9 is connected to the continuous recovery device, and is used to lead out the clean steam after filtration. The other end is connected to the main pipe of the original high-temperature heat source steam in the factory, and the clean steam is led back to the steam main pipe 11.

[0029] In this embodiment, two continuous recovery devices are included and are arranged in parallel with each other, so that one is used for backup and the other is used in the factory. Corresponding valves are installed on the steam main pipe 11, the steam inlet pipe 8, the steam outlet pipe 9 and the continuous water inlet pipe 10, respectively. Switching can be achieved by controlling the opening and closing of the valves. In other embodiments, more than two can also be arranged in parallel.

[0030] The continuous recovery device comprises a shell 1, a filtering component arranged in the shell 1 and a heat preservation component 2 wrapped outside the shell 1, wherein the filtering component is used for filtering steam, and further comprises a control component 3.

[0031] The shell 1 is provided with a steam inlet 11 and a steam outlet 12 . The steam inlet 11 is used to communicate with the steam introduction pipe 8 , and the steam outlet 12 is used to communicate with the steam outlet pipe 9 .

[0032] The heat preservation assembly 2 comprises an electromagnetic induction coil 21 , a first heat preservation layer 22 , a heat insulating layer 23 and a second heat preservation layer 24 which are sequentially wrapped around the shell 1 .

[0033] The electromagnetic induction coil 21 is controlled by the control component 3 and is used for induction heating the housing 1 .

[0034] A temperature sensor 1 4 is provided between the shell 1 and the first insulation layer 22 , and a temperature sensor 2 5 is provided between the insulation layer 23 and the second insulation layer 24 , which are used to sense the surface temperature of the shell 1 and the insulation layer 23 respectively and feed back the signal to the control component 3 .

[0035] The control component 3 is used to control the operation of the electromagnetic induction coil 21 and can be connected to the power plant control system.

[0036] The set temperature sensor 1 4 and temperature sensor 2 5 can respectively monitor the temperature of the shell 1 and the surface of the insulation layer 23 in real time and feed back the data to the control component 3. The control component 3 can control the working state of the electromagnetic induction coil 21 according to the real-time temperature feedback signal of the temperature sensor 1 4, so as to help the device to warm up the pipes before starting operation, shorten the required warming time, reduce the use of high-grade steam, and save costs; at the same time, the control component 3 can also monitor the insulation condition of the device according to the real-time temperature feedback signal of the temperature sensor 2 5, so as to facilitate the staff to timely inspect or replace the insulation component 2.

[0037] In this embodiment, the control component 3 adopts a DCS control system, which can be directly connected to the control system of the power plant to transmit data to the power plant system, and can also be controlled by the power plant control system, so that the staff can monitor the status of the recovery device in real time in the control room and make corresponding operations, which greatly improves the convenience of the staff to control the recovery device.

[0038] In the control component 3, a minimum temperature can be set for comparison with the data transmitted back by the temperature sensor 4. When the transmitted data is lower than the minimum temperature, the control component 3 controls the electromagnetic induction coil 21 to work and perform auxiliary heating on the housing 1; when the transmitted data is greater than or equal to the minimum temperature, the electromagnetic induction coil 21 stops working.

[0039] In the control component 3, a maximum temperature can also be set for comparison with the data transmitted back by the temperature sensor 2 5. When the transmitted data is greater than or equal to the maximum temperature, the control component 3 uploads an alarm signal to the power plant system, prompting that the insulation component 2 of the recovery device has an insulation abnormality and needs to be repaired; when the transmitted data is less than the maximum temperature, the recovery device continues to operate normally.

[0040] The operating frequency of the electromagnetic induction coil 21 is 10 kHz to 100 kHz.

[0041] The first thermal insulation layer 22 is made of aluminum silicate fiber material, and a plurality of evenly arranged empty grooves are formed in the middle of the first thermal insulation layer 22. The evenly arranged empty grooves form a thermal insulation cavity, which can effectively block the transfer of heat.

[0042] The heat-insulating layer 23 is an aerogel composite heat-insulating material, and the second heat-insulating layer 24 is a foamed ceramic heat-insulating layer, which can effectively reduce heat loss.

[0043] The first thermal insulation layer 22, the heat insulating layer 23 and the second thermal insulation layer 24 are an integrated installation structure, which is divided into a first installation component 6 and a second installation component 7. The first installation component 6 and the second installation component 7 are hinged on one side and connected by bolts on the other side, and can be detachably mounted outside the shell 1. The hinge of the first installation component 6 and the second installation component 7 is located directly above the shell 1, and the bolt connection is located directly below the shell 1.

[0044] The electromagnetic induction coil 21 is wound around the outer ring of the shell 1. The integrated mounting structure of the first thermal insulation layer 22, the heat insulation layer 23 and the second thermal insulation layer 24 has reserved holes corresponding to the positions of components such as the steam inlet, steam outlet, inspection port and exhaust port on the shell 1, so that the integrated mounting structure can be directly inserted from the top of the shell 1. After covering and fitting the surface of the shell 1, the first mounting component 6 and the second mounting component 7 located below the shell 1 are connected and fixed with bolts, which is convenient for installation and disassembly.

[0045] The above description is only a preferred embodiment of the utility model, and does not limit the patent protection scope of the utility model. Any equivalent structural transformation made using the contents of the utility model specification and drawings, directly or indirectly used in other related technical fields, is also included in the protection scope of the utility model.

Claims

1. A strong heat preservation continuous drainage recovery system, comprising a continuous drainage recovery device, a steam inlet pipe, a steam outlet pipe and a continuous drainage inlet pipe, wherein the continuous drainage recovery device comprises a shell, a filter component arranged in the shell and a heat preservation component wrapped outside the shell, wherein the filter component is used to filter the vaporized continuous drainage, and is characterized in that: It also includes a control component, the thermal insulation component includes an electromagnetic induction coil, a first thermal insulation layer, a heat insulation layer, and a second thermal insulation layer wrapped around the shell in sequence; the electromagnetic induction coil is controlled by the control component and is used to induction heat the shell; a temperature sensor 1 is provided between the shell and the first thermal insulation layer, and a temperature sensor 2 is provided between the heat insulation layer and the second thermal insulation layer, which are used to sense the surface temperatures of the shell and the heat insulation layer, respectively, and feed back signals to the control component, the control component is used to control the operation of the electromagnetic induction coil, and can be connected to the power plant control system; The first thermal insulation layer, the heat insulating layer and the second thermal insulation layer are an integrated installation structure, which is divided into a first installation component and a second installation component. The first installation part and the second installation part are hinged on one side and connected by bolts on the other side, and can be detachably mounted outside the shell; the hinge of the first installation part and the second installation part is located directly above the shell, and the bolt connection is located directly below the shell.

2. The strong heat preservation row recovery system according to claim 1, characterized in that: The working frequency of the electromagnetic induction coil is 10kHZ-100kHZ.

3. The strong heat preservation row recovery system according to claim 2, characterized in that: The first thermal insulation layer is made of aluminum silicate fiber material.

4. The strong heat preservation row recovery system according to claim 3, characterized in that: The middle of the first thermal insulation layer is provided with a plurality of evenly arranged empty grooves.

5. The strong heat preservation row recovery system as claimed in claim 4, characterized in that: The heat insulation layer is an aerogel composite heat insulation material.

6. The strong heat preservation row recovery system according to any one of claims 1 to 5, characterized in that: The second thermal insulation layer is a foamed ceramic thermal insulation layer.

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