Waste heat recycling device for heat supply primary network

Abstract

The utility model discloses a waste heat recycling device for a heat supply primary network, which belongs to the technical field of heat recovery, and comprises a heat power main pipeline, a neck bush is sleeved on the outer side of the heat power main pipeline, and the neck bush is sleeved on the outer side of the heat power main pipeline. The inner vertical face of the inner lining is fixedly connected with a plurality of supporting bosses abutting against the outer wall of the main heating power pipeline, the multiple supporting bosses are arranged at the radial position of the main heating power pipeline, a heat recovery chamber is arranged between every two adjacent supporting bosses, and the outer side of the inner lining is sleeved with an outer lining. A flow cavity is formed between the outer lining and the inner lining, a cold water inlet pipe and a hot water outlet pipe which are communicated and connected with the flow cavity are installed at the two ends of the outer lining respectively, heat lost in the heat supply steam conveying process of a heat power main pipeline can be recycled, and heat loss is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat recovery technical field more specifically, relate to a kind of waste heat recovery and utilization device for heating primary network. BACKGROUND

[0002] Primary network (is in heat pipe engineering, the usual designation of heat main line, usually refers to the heat pipe line from heat plant (or regional boiler room) to each heat exchange station.

[0003] Patent authorization number CN221402258U discloses a primary network heat exchange station pipeline heat preservation energy-saving device, including pipeline body, pipeline body outer surface is fixedly connected with the inner protection pipe, the inner protection pipe is fixedly connected with the outer protection pipe outside, the outer protection pipe outer surface is movably connected with the wrapping shell, by the inner protection pipe is sleeved on pipeline body, then the outer protection pipe is sleeved on the inner protection pipe, due to the outer surface of the inner protection pipe is convex, under the cooperation of the inner protection pipe and the outer protection pipe, the pipeline body is protected, to avoid the pipeline body from being damaged by knocking, since the inner protection pipe and the outer protection pipe are filled with a plurality of sponge blocks, the heat preservation effect can be improved.

[0004] But primary network in patent authorization number CN221402258U usually has larger pipe diameter and high pressure, to ensure that heat source can efficiently deliver heat to heat exchange station, and the steam delivered in primary network has higher temperature, although setting heat preservation structure, but there is still a part of heat loss, cause the waste of heat energy, so we propose a kind of waste heat recovery and utilization device for heating primary network to solve the above problems. UTILITY MODEL CONTENTS

[0005] 1. Technical problem to be solved

[0006] In view of the problems existing in the prior art, the utility model aims at providing a kind of waste heat recovery and utilization device for heating primary network, it can be recycled to the heat loss in the process of heat supply steam delivery of heat main pipeline, reduce heat loss.

[0007] 2. Technical scheme

[0008] To solve the above problems, the utility model adopts the following technical scheme.

[0009] A kind of waste heat recovery and utilization device for heating primary network, including heat main pipeline, the outside of the heat main pipeline is sleeved with inner bush, the inner vertical surface of the inner bush is fixedly connected with the support boss that is in abutment with the outer wall of the heat main pipeline, the support boss is provided with multiple in the radial position of the heat main pipeline, and heat recovery chamber is provided between adjacent two support bosses;

[0010] The outer side of the inner sleeve is sleeved with an outer sleeve, and a flow cavity is arranged between the inner sleeve and the outer sleeve;

[0011] Two ends of the outer sleeve are respectively provided with a cold water inlet pipe and a hot water outlet pipe in conductive connection with the flow cavity, and a side wall of the cold water inlet pipe is in conductive connection with a water inlet pipe;

[0012] One side of the heat main pipe is provided with a tube type heat exchanger, the tube type heat exchanger is respectively provided with a pipe A, a pipe B, a pipe C and a pipe D, the pipe A is in conductive connection with the hot water outlet pipe, and the pipe C is in conductive connection with the cold water inlet pipe.

[0013] Further, the outer side of the outer sleeve is covered with heat insulation cotton, and the heat insulation cotton is composed of multiple layers.

[0014] Further, the support boss, the inner sleeve and the outer sleeve are all made of copper.

[0015] Further, both ends of the heat recovery chamber and the flow cavity are provided with sealing parts connected with the inner sleeve and the outer sleeve.

[0016] Further, a stop valve is arranged at the water inlet pipe.

[0017] Further, a pipe A is arranged between the pipe A and the hot water outlet pipe through a flange joint.

[0018] Further, a pipe B is arranged between the pipe C and the cold water inlet pipe through a flange joint, and a circulating pump is arranged at the pipe B.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the utility model has the advantages that:

[0021] (1) In the scheme, the heat emitted by the heat main pipe is transmitted to the heat recovery chamber, the cold water is transported to the flow cavity through the cold water inlet pipe by using the water inlet pipe to access the municipal pipeline, under the action of heat transfer, the cold water flowing in the flow cavity gradually absorbs the heat in the heat recovery chamber and gradually warms up, finally, the cold water is transported to the tube type heat exchanger through the hot water outlet pipe and pipe A and flows to the pipe C, the cold water is input into the tube type heat exchanger through the pipe B to perform secondary heat exchange, the water temperature is reduced, then the water is discharged through the pipe D and can be directly supplied to the user, and the water after replacement of heat is discharged through the pipe C and flows into the cold water inlet pipe again to perform circulation, therefore, the heat loss in the process of heat supply steam transportation of the heat main pipe can be recycled and utilized, and the heat loss is reduced.

[0022] (2) the scheme, by the outer side of the outer bushing covering multilayer heat insulation cotton, thereby can effectively reduce the rate of heat transfer in the flow cavity with the outside, can further reduce the loss of heat. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0024] Figure 2 It is the heat main pipeline outside structure schematic diagram of the utility model;

[0025] Figure 3 It is the heat main pipeline front view schematic diagram of the utility model;

[0026] Figure 4 It is the heat main pipeline A-A part cross section schematic diagram of the utility model;

[0027] Figure 5 It is the structure schematic diagram of the utility model's tube heat exchanger.

[0028] Mark explanation in drawing:

[0029] 1, heat main pipeline;2, inner bushing;3, support boss;4, heat recovery chamber;5, outer bushing;6, flow cavity;7, heat insulation cotton;8, cold water inlet pipe;9, water inlet pipe;10, hot water outlet pipe;11, tube heat exchanger;12, connecting pipe A;13, connecting pipe B;14, connecting pipe C;15, connecting pipe D;16, pipeline A;17, pipeline B;18, circulating pump. DETAILED DESCRIPTION

[0030] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model;Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments;Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0031] Embodiment:

[0032] Please refer to Figures 1-5 A kind of waste heat recovery device for heating primary network, including heat main pipeline 1, heat main pipeline 1 is equipped with inner bushing 2 on the outside, the inner side of inner bushing 2 is fixedly connected with the support boss 3 of heat main pipeline 1 outer wall abutment, support boss 3 is provided with multiple in the radial position of heat main pipeline 1, and heat recovery chamber 4 is arranged between the adjacent two support boss 3.

[0033] Outer bushing 5 is arranged on the outside of inner bushing 2, and flow cavity 6 is arranged between outer bushing 5 and inner bushing 2.

[0034] Two ends of the outer sleeve 5 are respectively provided with the cold water inlet pipe 8 and the hot water outlet pipe 10 which are in communication with the flow cavity 6, and the side wall of the cold water inlet pipe 8 is in communication with the water inlet pipe 9;

[0035] One side of the heat main pipeline 1 is provided with the column tube heat exchanger 11, and the column tube heat exchanger 11 is respectively provided with the pipe A 12, the pipe B 13, the pipe C 14 and the pipe D 15, the pipe A 12 is in communication with the hot water outlet pipe 10, and the pipe C 14 is in communication with the cold water inlet pipe 8;

[0036] It should be noted that the heat main pipeline 1 is used for conveying high-temperature and high-pressure heating steam, the support boss 3 arranged on the inner wall of the inner sleeve 2 and the outer wall of the heat main pipeline 1 form the heat recovery chamber 4, the heat emitted by the heat main pipeline 1 is transmitted to the heat recovery chamber 4, and the cold water is conveyed to the flow cavity 6 through the cold water inlet pipe 8 by connecting the municipal pipeline through the water inlet pipe 9, under the action of heat transfer, the cold water flowing in the flow cavity 6 gradually absorbs the heat in the heat recovery chamber 4 and gradually warms up, and finally is conveyed to the column tube heat exchanger 11 through the hot water outlet pipe 10 and the pipe A 12 and flows to the pipe C 14, the cold water is input into the column tube heat exchanger 11 through the pipe B 13 to be secondarily heated, the temperature of the water is reduced, and then the water is discharged through the pipe D 15 and can be directly supplied to the user, and the water after the heat replacement is discharged through the pipe C 14 and flows into the cold water inlet pipe 8 again to circulate, so that the heat loss of the heat main pipeline 1 conveying the heating steam can be recycled and utilized, and the heat loss is reduced.

[0037] As shown in Figure 1 , Figure 4 , the outer side of the outer sleeve 5 is covered with the heat insulation cotton 7, and the heat insulation cotton 7 is composed of multiple layers;

[0038] It should be noted that the outer side of the outer sleeve 5 is covered with the heat insulation cotton 7, so that the rate of heat transfer between the flow cavity 6 and the outside can be effectively reduced, and the heat loss can be further reduced.

[0039] As shown in Figure 4 , the support boss 3, the inner sleeve 2 and the outer sleeve 5 are all made of copper;

[0040] It should be noted that the copper has good heat conduction effect, so that the heat recovery is facilitated.

[0041] As shown in Figure 1 , Figure 4 , both ends of the heat recovery chamber 4 and the flow cavity 6 are provided with the sealing part connected with the inner sleeve 2 and the outer sleeve 5;

[0042] It needs to be explained that the sealing part can effectively prevent heat loss and ensure normal flow of fluid in the flow cavity 6.

[0043] As shown in Figure 2 , the water inlet pipe 9 is provided with a stop valve;

[0044] It needs to be explained that after the water is delivered through the water inlet pipe 9, the stop valve is closed to form a circulating closed circuit.

[0045] As shown in Figure 1 , Figure 5 , the connecting pipe A12 and the hot water outlet pipe 10 are provided with a pipeline A16 through a flange joint, the connecting pipe C14 and the cold water inlet pipe 8 are provided with a pipeline B17 through a flange joint, and the pipeline B17 is provided with a circulating pump 18.

[0046] It needs to be explained that the circulating pump 18 is opened to provide power for the circulating water, so as to realize the alternate recovery of heat.

[0047] In use: the heat main pipeline 1 is used for conveying high-temperature and high-pressure heat supply steam, the support boss 3 arranged on the inner wall of the inner sleeve 2 and the outer wall of the heat main pipeline 1 form a heat recovery chamber 4, the heat emitted by the heat main pipeline 1 is transmitted to the heat recovery chamber 4, and the cold water for replacing heat is conveyed to the flow cavity 6 through the cold water inlet pipe 8 by connecting the water inlet pipe 9 to the municipal pipeline, under the action of heat transfer, the cold water flowing in the flow cavity 6 gradually absorbs the heat in the heat recovery chamber 4 and gradually warms up, and finally is conveyed to the tube heat exchanger 11 through the hot water outlet pipe 10 and the connecting pipe A12 and flows to the connecting pipe C14, the cold water input through the connecting pipe B13 enters the tube heat exchanger 11 for secondary heat exchange, the water temperature is reduced, and then is discharged through the connecting pipe D15 and can be directly supplied to the user, and the water after replacing heat is discharged through the connecting pipe C14 and flows into the cold water inlet pipe 8 again for circulation.

[0048] The above is only a preferred specific embodiment of the present application; however, the protection scope of the present application is not limited thereto. Any skilled person in the art can make equivalent replacement or change according to the technical scheme of the present application and the improved concept thereof within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A waste heat recovery device for a heating primary network, comprising a heating main (1), characterized in that: The outer side of the heat main pipeline (1) is sleeved with an inner sleeve (2), the inner side of the inner sleeve (2) is fixedly connected with a supporting boss (3) abutting against the outer wall of the heat main pipeline (1), a plurality of supporting bosses (3) are arranged at the radial position of the heat main pipeline (1), and a heat recovery chamber (4) is arranged between two adjacent supporting bosses (3); The outer side of the inner sleeve (2) is sleeved with an outer sleeve (5), and a flow cavity (6) is arranged between the outer sleeve (5) and the inner sleeve (2); Two ends of the outer sleeve (5) are respectively provided with a cold water inlet pipe (8) and a hot water outlet pipe (10) in conductive connection with the flow cavity (6), and the side wall of the cold water inlet pipe (8) is in conductive connection with a water inlet pipe (9); One side of the heat main pipeline (1) is provided with a tube type heat exchanger (11), the tube type heat exchanger (11) is respectively provided with a pipe A (12), a pipe B (13), a pipe C (14) and a pipe D (15), the pipe A (12) is in conductive connection with the hot water outlet pipe (10), and the pipe C (14) is in conductive connection with the cold water inlet pipe (8).

2. A device for recovering waste heat from a heating primary circuit according to claim 1, characterized in that: The outer side of the outer sleeve (5) is covered with heat insulation cotton (7), and the heat insulation cotton (7) is composed of multiple layers.

3. A device for recovering waste heat of a heating primary circuit according to claim 1, characterized in that: The supporting boss (3), the inner sleeve (2) and the outer sleeve (5) are all made of copper.

4. The apparatus for recovering waste heat of a primary heating system according to claim 1, wherein: Both ends of the heat recovery chamber (4) and the flow cavity (6) are provided with sealing parts connected with the inner sleeve (2) and the outer sleeve (5).

5. A device for recovering waste heat of a heating primary circuit according to claim 1, characterized in that: A stop valve is arranged at the water inlet pipe (9).

6. A heat recovery device for a heating primary circuit according to claim 1, characterized in that: A pipe A (16) is arranged between the pipe A (12) and the hot water outlet pipe (10) through a flange joint.

7. A heat recovery device for a heating primary circuit according to claim 1, characterized in that: A pipe B (17) is arranged between the pipe C (14) and the cold water inlet pipe (8) through a flange joint, and a circulating pump (18) is arranged at the pipe B (17).

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