Boiler preheating recovery device for combined heat and power generation
By adopting a combination design of spiral heat conductor and discharge mechanism in the boiler preheating and recovery device, the problems of hot air loss and dust accumulation caused by the fitting of the heat storage box and the chimney are solved, and efficient heat recovery and effective discharge of solid particles are achieved. , improves the convenience of the device.
Patent Information
- Application Number
- CN202323519105.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-22
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2033-12-22
AI Technical Summary
When the existing boiler preheating and recovery device for cogeneration is bonded to the chimney, hot air is lost and dust particles cannot be effectively discharged, making it inconvenient to use.
A boiler preheating and recycling device including an electrostatic adsorber, a spiral heat conductor and an isolation mechanism is designed. The spiral heat conductor absorbs heat and conducts it to the recycling box to heat water, and at the same time, the waste gas is transported separately through the discharge mechanism and the oblique hole structure. and heat, and discharge solid particles when the electrostatic adsorber is saturated.
It realizes efficient heat recovery and effective discharge of solid particles, avoids hot air loss and dust accumulation, and improves the convenience of the device.
Smart Images
Figure CN222297969U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat recovery, in particular to a boiler preheating recovery device for cogeneration of heat and power. Background Art
[0002] After searching, the Chinese patent publication number is CN217329850U, and the publication date is 2022-08-30. It discloses a boiler preheating recovery device for cogeneration, including a chimney, an electrostatic adsorber is provided at the bottom of the chimney and a smoke inlet pipe is connected to one side of the bottom, a heat storage box is provided at the top of the chimney, a heating wire is provided inside the heat storage box, a water inlet pipe is connected to one side of the top of the heat storage box, and a drain pipe is connected to the other side of the bottom, and multiple rows of suction racks are installed on the lower surface of the heat storage box; after the boiler is preheated, the residual heat after the fuel combustion is gathered in the chimney through the exhaust gas, the suction rack collects the exhaust gas filtered by the electrostatic adsorber, and the heat of the exhaust gas is used to heat the cold water in the heat storage box, thereby recycling the heat. However, when the device is in use, the heat storage box is arranged in the chimney. In order to avoid the loss of hot gas, the heat storage box must be in a fitted state with the chimney. Therefore, when in use, the heat is absorbed by water, the dust particles are processed by the electrostatic adsorber, and the remaining exhaust gas cannot be discharged, which is inconvenient to use. Summary of the invention
[0003] The purpose of the utility model is to provide a boiler preheating recovery device for cogeneration of heat and power, so as to solve the technical problems mentioned in the above background technology.
[0004] The purpose of the utility model can be achieved through the following technical solutions:
[0005] A boiler preheating recovery device for cogeneration of heat and power comprises a chimney, in which an electrostatic adsorber is arranged, and a discharge mechanism and a recovery mechanism are respectively arranged on the chimney.
[0006] The recovery mechanism includes a support ring and a recovery box. The support ring is fixedly connected in the chimney. A first heat conductor is placed on the support ring. The lower part of the first heat conductor is arranged in a spiral shape. One end of the first heat conductor passes through the chimney and extends to the outside of the chimney. A second heat conductor is fixedly connected to the first heat conductor. One end of the second heat conductor passes through the recovery box and extends to the inside of the recovery box. A water inlet pipe and a drain pipe are respectively arranged on the recovery box. An isolation mechanism is arranged between the recovery box and the chimney.
[0007] As a further solution of the utility model: the isolation mechanism is an isolation sleeve, and the isolation sleeve is arranged on the second heat conducting member.
[0008] As a further solution of the utility model: the two ends of the isolation sleeve are fixedly connected to the recovery box and the chimney respectively.
[0009] As a further solution of the utility model: the discharge mechanism includes a conveying bucket, the conveying bucket is fixedly connected in the chimney, the bottom of the conveying bucket is fixedly connected with a conveying pipe, and the conveying pipe is penetrated by an inclined hole.
[0010] As a further solution of the utility model: the delivery pipe is composed of a first connecting pipe, a second connecting pipe and a third connecting pipe.
[0011] As a further solution of the utility model: the inclined hole is arranged on the first connecting pipe, and a plurality of the inclined holes are arranged.
[0012] Beneficial Effects
[0013] The utility model provides a boiler preheating recovery device for cogeneration. Compared with the prior art, it has the following beneficial effects:
[0014] (1) After preheating by the boiler, the residual heat after the fuel combustion flows toward the top of the chimney along with the exhaust gas. Since the first heat-conducting member is long and spirally arranged, the first heat-conducting member is used to absorb and conduct the heat, and then the second heat-conducting member is used to introduce the heat into the recovery box to heat the water, thereby recycling the heat.
[0015] (2) The present application uses a discharge mechanism and a recovery mechanism in coordination, and in the process of exhausting exhaust gas, the exhaust gas and heat can be transported separately, and when the electrostatic adsorber reaches saturation in adsorbing solid particles, the discharge mechanism can be used to effectively discharge the detached solid particles. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a three-dimensional diagram of the utility model;
[0017] Figure 2 It is a three-dimensional cross-sectional view of the utility model;
[0018] Figure 3 It is a partial cross-sectional view of the recovery mechanism of the utility model.
[0019] In the figure: 1. chimney; 2. electrostatic adsorber; 3. discharge mechanism; 31. conveying bucket; 32. conveying pipe; 321. first connecting pipe; 322. second connecting pipe; 323. third connecting pipe; 33. inclined hole; 4. recovery mechanism; 41. support ring; 42. recovery box; 43. first heat conducting member; 44. second heat conducting member; 45. water inlet pipe; 46. drain pipe; 47. isolation mechanism; 471. isolation sleeve. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figure 1-3 As shown, the utility model is a boiler preheating recovery device for cogeneration, comprising a chimney 1, an electrostatic adsorber 2 is arranged in the chimney 1, and a discharge mechanism 3 and a recovery mechanism 4 are respectively arranged on the chimney 1; the recovery mechanism 4 comprises a support ring 41 and a recovery box 42, the support ring 41 is fixedly connected in the chimney 1, a first heat conducting member 43 is placed on the support ring 41, the lower part of the first heat conducting member 43 is arranged in a spiral shape, one end of the first heat conducting member 43 penetrates the chimney 1 and extends to the outside of the chimney 1, and a second heat conducting member 44 is fixedly connected to the first heat conducting member 43. One end of the second heat-conducting member 44 passes through the recovery box 42 and extends to the interior of the recovery box 42. The recovery box 42 is respectively provided with a water inlet pipe 45 and a drain pipe 46. An isolation mechanism 47 is provided between the recovery box 42 and the chimney 1. After being preheated by the boiler, the residual heat after the fuel combustion flows toward the top of the chimney 1 with the exhaust gas. Since the first heat-conducting member 43 is long and spirally arranged, the first heat-conducting member 43 is used to absorb and conduct the heat, and then the second heat-conducting member 44 is used to introduce the heat into the recovery box 42 to heat the water, thereby recycling the heat.
[0022] The isolation mechanism 47 is an isolation sleeve 471 , and the isolation sleeve 471 is disposed on the second heat conducting member 44 .
[0023] Both ends of the isolation sleeve 471 are fixedly connected to the recovery box 42 and the chimney 1 respectively.
[0024] The discharge mechanism 3 includes a conveying bucket 31, which is fixedly connected to the chimney 1. A conveying pipe 32 is fixedly connected to the bottom of the conveying bucket 31. An inclined hole 33 is penetrated through the conveying pipe 32. The outer opening of the inclined hole 33 (the opening located on the outer surface of the first connecting pipe 321) is higher than the inner opening (the opening located on the inner surface of the first connecting pipe 321). This design can prevent solid particles from falling into the chimney 1. Through the coordinated use of the discharge mechanism 3 and the recovery mechanism 4, the waste gas and heat can be separately transported during the exhaust gas discharge process. When the electrostatic adsorber 2 adsorbs solid particles to saturation, the discharge mechanism 3 can be used to effectively discharge the detached solid particles.
[0025] The delivery pipe 32 is composed of a first connecting pipe 321 , a second connecting pipe 322 and a third connecting pipe 323 .
[0026] The inclined hole 33 is provided on the first connecting pipe 321 , and a plurality of the inclined holes 33 are provided.
[0027] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.
[0028] The working principle of the utility model is as follows: after being preheated by the boiler, when the exhaust gas is discharged through the chimney 1, the residual heat after the fuel combustion flows toward the top of the chimney 1 with the exhaust gas. Since the first heat-conducting member 43 is long and spirally arranged, the heat is absorbed and conducted by the first heat-conducting member 43, and then the heat is introduced into the recovery box 42 by the second heat-conducting member 44 to heat the water, so as to recycle the heat. The exhaust gas passes through the inclined hole 33 and then to the first connecting pipe 321, and then passes through the conveying bucket 31. After that, the exhaust gas passes through the electrostatic adsorber 2, and the electrostatic adsorber 2 is used to adsorb solid particles. When the electrostatic adsorber 2 adsorbs solid particles to saturation, the discharging mechanism 3 can effectively discharge the detached solid particles.
[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A boiler preheat recovery device for cogeneration, comprising a chimney (1), wherein an electrostatic adsorber (2) is arranged in the chimney (1), characterized in that: The chimney (1) is provided with a discharge mechanism (3) and a recovery mechanism (4), respectively; the recovery mechanism (4) comprises a support ring (41) and a recovery box (42); the support ring (41) is fixedly connected to the chimney (1); a first heat-conducting member (43) is placed on the support ring (41); the lower part of the first heat-conducting member (43) is arranged in a spiral shape; one end of the first heat-conducting member (43) penetrates the chimney (1) and extends to the outside of the chimney (1); a second heat-conducting member (44) is fixedly connected to the first heat-conducting member (43); one end of the second heat-conducting member (44) penetrates the recovery box (42) and extends to the inside of the recovery box (42); a water inlet pipe (45) and a drain pipe (46) are respectively provided on the recovery box (42); an isolation mechanism (47) is provided between the recovery box (42) and the chimney (1).
2. A boiler preheating recovery device for cogeneration of heat and power according to claim 1, characterized in that: The isolation mechanism (47) is an isolation sleeve (471), and the isolation sleeve (471) is disposed on the second heat conducting member (44).
3. A boiler preheat recovery device for cogeneration of heat and power according to claim 2, characterized in that: The two ends of the isolation sleeve (471) are respectively fixedly connected to the recovery box (42) and the chimney (1).
4. The boiler preheat recovery device for cogeneration of heat and power according to claim 1, characterized in that: The discharge mechanism (3) comprises a conveying bucket (31), the conveying bucket (31) being fixedly connected to the chimney (1), the bottom of the conveying bucket (31) being fixedly connected to a conveying pipe (32), and an inclined hole (33) penetrating the conveying pipe (32).
5. A boiler preheat recovery device for cogeneration of heat and power according to claim 4, characterized in that: The delivery pipe (32) consists of a first connecting pipe (321), a second connecting pipe (322) and a third connecting pipe (323).
6. A boiler preheat recovery device for cogeneration of heat and power according to claim 5, characterized in that: The inclined hole (33) is provided on the first connecting pipe (321), and a plurality of the inclined holes (33) are provided.