CN217209520U

CN217209520U - Negative-pressure backwater warming unit for heat supply heat source

Info

Publication number: CN217209520U
Application number: CN202220930914.8U
Authority: CN
Inventors: 蒋志刚
Original assignee: Dalian Wushuang Energy Saving Technology Development Co Ltd
Current assignee: Dalian Wushuang Energy Saving Technology Development Co Ltd
Priority date: 2022-04-21
Filing date: 2022-04-21
Publication date: 2022-08-16
Anticipated expiration: 2032-04-21

Abstract

The utility model discloses a heat supply heat source negative pressure return water warming unit, which comprises a water outlet pipeline and a water return pipeline which are connected with a boiler, wherein the water return pipeline is provided with a boiler circulating pump which is positioned at the front end of an inlet of the boiler; a heating pipeline is connected between the water outlet pipeline and the water return pipeline, and a heating circulating pump is arranged on the heating pipeline; a fluid director is arranged at the joint of the warming pipeline and the water return pipeline, and is positioned at the front end of a suction port of a circulating pump of the boiler; the connection point of the warming pipeline and the water outlet pipeline is a warming hot water taking point, and liquid in the warming pipeline flows from the warming hot water taking point to the direction of the flow guide device. The utility model discloses can improve boiler operation return water temperature, and then improve the operating efficiency of boiler, reduce boiler fuel cost.

Description

Negative-pressure backwater warming unit for heat supply heat source

Technical Field

The utility model belongs to the technical field of heating system return water heats, concretely relates to heat supply heat source negative pressure return water heats unit.

Background

The working principle of the existing heating system is as follows: high-temperature water output by the heat source supplies hot water to a heat user through the outer pipe network system, the hot water comes out of the heat user and returns to the heat source through the water return pipeline, return water is injected into the boiler through the water pump, and the boiler reheats and outputs the return water for reciprocating circulation. The low return water temperature of the system is a common problem of the existing heating system, which not only influences the operation efficiency of the boiler, but also can generate sulfur dioxide gas to erode the boiler body in the combustion process of the boiler because of the low return water temperature. The concrete points are as follows: the rated backwater temperature of the boiler is 70 ℃, but the actual running backwater temperature is only 40 ℃, which can reach as little as 50 ℃, the rated flow of the boiler and the high-temperature water generated by the boiler are difficult to distinguish, and the actual running flow of the boiler is far greater than the rated flow of the boiler. The existing heat supply heat source has no means for heating the return water of the system, so that the heat supply temperature is increased, and only more coal is consumed. The problems of low boiler efficiency and high fuel consumption caused by low return water temperature cannot be solved for a long time.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defect that boiler operation return water temperature is low among the prior art, the utility model provides a heat supply heat source negative pressure return water heating unit can improve boiler operation return water temperature, and then improves the operating efficiency of boiler, reduces boiler fuel cost.

The utility model discloses a solve the technical scheme that its technical problem adopted and be: a negative pressure backwater warming unit for a heat supply heat source comprises a water outlet pipeline and a backwater pipeline which are connected with a boiler, wherein a boiler circulating pump positioned at the front end of an inlet of the boiler is arranged on the backwater pipeline; a heating pipeline is connected between the water outlet pipeline and the water return pipeline, and a heating circulating pump is arranged on the heating pipeline; a fluid director is arranged at the joint of the warming pipeline and the water return pipeline, and is positioned at the front end of a suction port of a circulating pump of the boiler; the connection point of the warming pipeline and the water outlet pipeline is a warming hot water taking point, and liquid in the warming pipeline flows from the warming hot water taking point to the direction of the flow guide device.

As a further embodiment of the present invention, a boiler bypass pipe is further connected between the water outlet pipe and the water return pipe, and a bypass pipe valve is arranged on the boiler bypass pipe; the heating hot water taking point is arranged at the front end of a connecting point of the boiler bypass pipe and the water outlet pipeline.

As a further embodiment of the utility model, the junction of boiler bypass pipe and outlet conduit is equipped with the water mixer of water conservancy diversion.

As a further embodiment of the utility model, be equipped with the dirt separator on the return water pipeline, the dirt separator is located the tie point front end of boiler bypass pipe and return water pipeline.

As a further implementation scheme of the utility model, the water return pipeline is connected with a water supplementing pipeline which is communicated to the soft water tank, and a water supplementing constant pressure pump is arranged on the water supplementing pipeline; and the connecting point of the water supplementing pipeline and the water return pipeline is positioned at the front end of the connecting point of the boiler bypass pipe and the water return pipeline.

As a further embodiment of the utility model, be equipped with the one-way check valve that is located the heating circulation pump rear end on the pipeline that heats, still be equipped with a plurality of valves that are located both ends around the heating circulation pump respectively.

The beneficial effects of the utility model include: the temperature-increasing pipeline and the heating circulating pump are arranged, so that the running return water of the boiler can be increased in temperature, namely, the return water with the lower temperature of the heating system is increased to or close to the rated return water temperature of the boiler by 70 ℃ before entering the boiler, further, the running efficiency of the boiler is improved, and the fuel cost of the boiler is reduced.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

The reference numbers in the figures illustrate: 1. the system comprises a boiler, 2, a water outlet pipeline, 3, a water return pipeline, 4, a boiler circulating pump, 5, a boiler bypass pipe, 6, a bypass pipe valve, 7, a warming pipeline, 8, a heating circulating pump, 9, a fluid director, 10, a diversion water mixer, 11, a dirt remover, 12, a water replenishing pipeline, 13, a water replenishing constant pressure pump, 14, a soft water tank, 15, a one-way check valve, 16 and a valve.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "horizontal", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or component referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used merely to distinguish one element from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

A heat supply heat source negative pressure backwater warming machine set comprises a water outlet pipeline 2 and a backwater pipeline 3 which are connected with a boiler 1, wherein the inlet and the outlet of the boiler 1 are respectively connected with a valve 16;

the water return pipeline 3 is provided with a boiler circulating pump 4 positioned at the front end of an inlet of the boiler 1; a one-way check valve 15 is arranged at the outlet end of the boiler circulating pump 4, and a valve 16 is arranged at the inlet end of the boiler circulating pump 4;

a temperature-increasing pipeline 7 is connected between the water outlet pipeline 2 and the water return pipeline 3, and a heating circulating pump 8 is arranged on the temperature-increasing pipeline 7; the warming pipeline 7 is also provided with a one-way check valve 15 positioned at the rear end of the heating circulating pump 8 and a plurality of valves 16 respectively positioned at the front end and the rear end of the heating circulating pump 8;

a fluid director 9 is arranged at the joint of the warming pipeline 7 and the water return pipeline 3, and the fluid director 9 is positioned at the front end of a suction port of the boiler circulating pump 4; the water return pipeline 3 is provided with valves 16 positioned at the front end and the rear end of the fluid director 9;

the connection point of the warming pipeline 7 and the water outlet pipeline 2 is a warming hot water taking point, and the liquid in the warming pipeline 7 flows from the warming hot water taking point to the flow guide device 9.

A boiler bypass pipe 5 is also connected between the water outlet pipe 2 and the water return pipe 3, and a bypass pipe valve 6 is arranged on the boiler bypass pipe 5;

the heating hot water taking point is arranged at the front end of a connection point of the boiler bypass pipe 5 and the water outlet pipeline 2, a diversion water mixer 10 is arranged at the connection part of the boiler bypass pipe 5 and the water outlet pipeline 2, and valves 16 are arranged at the front end and the rear end of the diversion water mixer 10;

preferably, the bypass valve 6 is an electrically-operated shutoff valve.

The water return pipeline 3 is provided with a dirt separator 11, the dirt separator 11 is positioned at the front end of a connecting point of the boiler bypass pipe 5 and the water return pipeline 3, and valves and pressure gauges are arranged at the front end and the rear end of the dirt separator 11;

a water replenishing pipeline 12 is connected to the water return pipeline 3, the water replenishing pipeline 12 is communicated to a soft water tank 14, a water replenishing constant pressure pump 13 is arranged on the water replenishing pipeline 12, valves 16 are arranged at the front end and the rear end of the water replenishing constant pressure pump 13, and a one-way check valve 15 is arranged at the rear end of the water replenishing constant pressure pump; and the connection point of the water supplementing pipeline 12 and the water return pipeline 3 is positioned at the front end of the connection point of the boiler bypass pipe 5 and the water return pipeline 3.

The configuration of the heat supply heat source negative pressure backwater warming unit aims to warm the low-temperature backwater of the system to the backwater temperature which is rated for the operation of a boiler or is close to 70 ℃. Dividing hot water heated by a boiler 1 into two parts, wherein one part is used as hot water for heat supply and is conveyed to an outer pipe network through a water outlet pipeline 2, and the other part does not generate a heat source, flows into a heating pipeline 7 and is conveyed to a fluid director 9 through a heating circulating pump 8;

the high-temperature water heated by the temperature increasing pipeline 7 of the boiler and the low-temperature backwater of the system backwater pipeline 3 are respectively conveyed into the fluid director 9 at the front end of the suction port of the boiler circulating pump 4, and the backwater heated by the guide mixed water is injected into the inlet of the boiler 1 through the boiler circulating pump 4, so that the running backwater temperature of the boiler 1 reaches or approaches to a rated backwater temperature value, and the aim of improving the boiler efficiency is fulfilled.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A heat supply heat source negative pressure backwater warming unit is characterized by comprising a water outlet pipeline (2) and a backwater pipeline (3) which are connected with a boiler (1), wherein a boiler circulating pump (4) positioned at the front end of an inlet of the boiler (1) is arranged on the backwater pipeline (3); a temperature-increasing pipeline (7) is connected between the water outlet pipeline (2) and the water return pipeline (3), and a heating circulating pump (8) is arranged on the temperature-increasing pipeline (7); a fluid director (9) is arranged at the joint of the warming pipeline (7) and the water return pipeline (3), and the fluid director (9) is positioned at the front end of a suction port of the boiler circulating pump (4); the connection point of the warming pipeline (7) and the water outlet pipeline (2) is a warming hot water taking point, and liquid in the warming pipeline (7) flows from the warming hot water taking point to the flow guide device (9).

2. A heat supply heat source negative pressure return water heating unit according to claim 1, wherein a boiler bypass pipe (5) is further connected between the water outlet pipe (2) and the water return pipe (3), and a bypass pipe valve (6) is arranged on the boiler bypass pipe (5); the heating hot water taking point is arranged at the front end of a connecting point of the boiler bypass pipe (5) and the water outlet pipeline (2).

3. A heat supply heat source negative pressure backwater warming unit according to claim 2, characterized in that a diversion water mixer (10) is arranged at the joint of the boiler bypass pipe (5) and the water outlet pipeline (2).

4. A heat supply heat source negative pressure return water heating unit according to claim 2, characterized in that the return pipe (3) is provided with a dirt separator (11), and the dirt separator (11) is located at the front end of the connection point of the boiler bypass pipe (5) and the return pipe (3).

5. A negative pressure return water heating unit as claimed in claim 3, wherein the return water pipe (3) is connected with a water supply pipe (12), the water supply pipe (12) is communicated with the soft water tank (14), and the water supply pipe (12) is provided with a water supply constant pressure pump (13); and the connecting point of the water supplementing pipeline (12) and the water return pipeline (3) is positioned at the front end of the connecting point of the boiler bypass pipe (5) and the water return pipeline (3).

6. A heating heat source negative pressure backwater warming machine set according to any one of claims 1 to 5, characterized in that the warming pipeline (7) is provided with a one-way check valve (15) positioned at the rear end of the heating circulating pump (8), and is further provided with a plurality of valves (16) respectively positioned at the front end and the rear end of the heating circulating pump (8).