CN220489247U - Hydraulic balance adjusting system for heat supply secondary network - Google Patents

Abstract

The utility model discloses a hydraulic balance adjusting system for a heat supply secondary network, which comprises: the system comprises a heat exchange station, an electric regulating valve and a first pressure sensor; the heat exchange station is connected with a heat supply pipeline and is connected with a plurality of heat users through the heat supply pipeline; electric regulating valves are arranged at the heat supply pipelines of the plurality of heat users; the heat supply pipeline of a plurality of heat users department all is equipped with first pressure sensor. The balance adjusting system can monitor the pipeline network in real time and is convenient to adjust.

Description

Hydraulic balance adjusting system for heat supply secondary network

Technical Field

The utility model relates to the technical field of heat supply regulation control, in particular to a hydraulic balance regulating system for a heat supply secondary network.

Background

In the initial stage of heating, as the distances from a hot user to a heat exchange station in a heating pipeline are different, the phenomenon of uneven cooling and heating of the user is very common, the indoor temperature of one part of the hot user is too high, the indoor temperature of the other part of the hot user cannot meet the minimum heating requirement, hydraulic imbalance is overcome, and the hydraulic balance of a heating pipeline network is very important work in the heating industry. The root cause of the hydraulic imbalance is that the resistance characteristic of the heat supply pipe network in operation cannot realize equal resistance of each user pipe section under the flow required by users, under the conventional design condition, equipment needs to meet the utilization pressure head with the least adverse point, so that other heat user pipe sections have more or less margin values, hydraulic imbalance is necessarily generated in a natural state, manual adjustment is time-consuming and labor-consuming, the workload is huge under the condition of large pipe network coverage area, the regulation precision cannot be ensured, and the real-time regulation and control of the whole pipe network cannot be realized when the hydraulic working condition is changed.

Therefore, the hydraulic balance adjusting system for the heat supply secondary network, which can monitor the pipeline network in real time and is convenient to adjust, is a problem to be solved by the person skilled in the art.

Disclosure of Invention

In view of the above, the utility model provides a hydraulic balance adjusting system for a heat supply secondary network, which can monitor a pipeline network in real time and is convenient to adjust.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

a hydraulic balance adjustment system for a heating secondary network, comprising:

the heat exchange station is connected with a heat supply pipeline and is connected with a plurality of heat users through the heat supply pipeline;

the electric regulating valves are arranged at the heat supply pipelines of a plurality of heat users;

the heat supply pipelines of a plurality of heat users are provided with first pressure sensors; the first pressure sensor is connected with the electric regulating valve.

The technical scheme has the beneficial effects that the first pressure sensor can measure the pressure value of each heat user, then the electric regulating valve is controlled to regulate according to the measured pressure value, and the hydraulic balance in the pipe network can be regulated in real time.

Preferably, the electric regulating valve and the first pressure sensor are both arranged at the backwater heat supply pipeline of the heat user, and the water supply heat pipeline of the heat user is connected with a valve.

Preferably, a second pressure sensor is arranged in the heat exchange station. And comparing the data detected by the first pressure sensor with the second pressure sensor, determining the position with the largest pressure difference, at which the heat user is at the most unfavorable point in the pipe network, then reducing the opening of the electric regulating valve at other heat users by taking the difference as a reference, and increasing the resistance of the heat user, so that the difference between the other first pressure sensor and the second pressure sensor approaches to the pressure difference at the most unfavorable point until the pressure difference is equal, and at the moment, completing the adjustment of the hydraulic balance in the pipe network.

Preferably, the heat supply pipelines of a plurality of heat users are provided with valve wells, and the first pressure sensor, the electric regulating valve and the valve are arranged in the valve wells.

Compared with the prior art, the utility model discloses a hydraulic balance adjusting system for a heat supply secondary network, which has the beneficial effects that:

(1) The system can realize the hydraulic balance of the pipe network on the whole, reduce the initial network adjustment time of heating and simultaneously reduce the network adjustment difficulty of the complex pipe network;

(2) The system can realize the real-time regulation and control of the hydraulic balance of the pipe network, and can also react at the fastest speed and be regulated in real time when the hydraulic working condition changes;

(3) The system has the pipe network fault monitoring and alarming function, can reduce the obstacle removing area according to the alarm point position, and can close the valve at the fault point position in time to reduce the water loss of the pipe network.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a hydraulic balance adjusting system according to the present utility model;

FIG. 2 is a schematic view of the structure of the valve well according to the present utility model.

Wherein, in the drawing,

1-a heat exchange station; 2-hot users; 3-an electric regulating valve; 4-a first pressure sensor; 5-valve; 6-a heat supply pipeline; 7-valve well.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The embodiment of the utility model discloses a hydraulic balance adjusting system for a heat supply secondary network, which comprises the following components:

the heat exchange station 1, the heat exchange station 1 is connected with a heat supply pipeline 6, and is connected with a plurality of heat users 2 through the heat supply pipeline 6;

the electric regulating valves 3 are arranged at the heat supply pipelines 6 of the plurality of heat users 2;

the first pressure sensor 4 is arranged at the heat supply pipeline 6 of the plurality of heat users 2; the first pressure sensor 4 is connected to the electric control valve 3. According to the heat supply system, the electric regulating valve 3 is arranged at the inlet end of the heat user 2 of the secondary network, the first pressure sensor 4 is arranged behind the valve, the second pressure sensor is arranged on the water supply main pipe of the secondary network in the heat exchange station 1, the pressure value of each first pressure sensor 4 is collected in real time during operation and fed back to the electric regulating valve 3 in a signal mode, the resistance of the heat user 2 is changed by adjusting the opening of the electric regulating valve 3, the equal resistance of pipe sections between each heat user 2 and the heat exchange station 1 is realized, and the balance of resistance is achieved, so that the problem of hydraulic imbalance is solved.

In order to further optimize the technical scheme, the electric regulating valve 3 and the first pressure sensor 4 are arranged at the backwater heat supply pipeline 6 of the heat user 2, and the water supply heat pipeline 6 of the heat user 2 is connected with the valve 5.

In order to further optimize the above technical solution, a second pressure sensor is provided in the heat exchange station 1.

In order to further optimize the above technical solution, the heating pipes 6 of the plurality of heat users 2 are all provided with valve wells 7, and the first pressure sensor 4, the electric control valve 3 and the valve 5 are all arranged in the valve wells 7.

In order to further optimize the technical scheme, when the pressure difference between the first pressure sensor 4 and the second pressure sensor has a large change in pipe network flow, data are collected again, and the electric regulating valve 3 can determine the position of the most adverse point again according to the collected data and adjust the opening of the valve; the pressure difference value can repeatedly collect data for a plurality of times according to a preset unit time, and the electric regulating valve 3 can adjust the opening of the valve in real time according to the data collected again each time; the preset unit time can be manually modified and adjusted according to actual conditions; the heat user 2 at the special position, such as mountain and edge positions, has higher heat demand, and can set coefficients according to conditions, properly increase the opening of the electric regulating valve 3 and obtain more flow;

in order to further optimize the technical scheme, a controller is arranged in the system, a normal pressure range interval is set in the controller, the difference value between the first sensor 4 and the second pressure sensor is transmitted into the controller, when pressure fluctuation is in the range, the pressure fluctuation is regarded as normal operation of a pipe network, when the pressure fluctuation is obviously reduced, the pipe network is leaked or blocked to cause pressure rise, when the pressure fluctuation exceeds the normal pressure range interval, the controller sends an alarm signal to the first pressure sensor 4, after the alarm, the first pressure sensor 4 transmits the signal to the electric regulating valve 3, at the moment, the electric regulating valve 3 of the loop heat user 2 is automatically closed, and the loop heat user 2 can be manually restarted until the pipe network is repaired.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (4)

1. A hydraulic balance adjustment system for a heating secondary network, comprising:

the heat exchange station (1), the heat exchange station (1) is connected with a heat supply pipeline (6), and is connected with a plurality of heat users (2) through the heat supply pipeline (6);

the electric control valves (3) are arranged at the positions of the heat supply pipelines (6) of the plurality of heat users (2);

the first pressure sensors (4) are arranged at the heat supply pipelines (6) of the plurality of heat users (2); the first pressure sensor (4) is connected with the electric regulating valve (3).

2. The hydraulic balance adjusting system for the heat supply secondary network according to claim 1, wherein the electric adjusting valve (3) and the first pressure sensor (4) are both arranged at a backwater heat supply pipeline (6) of the heat user (2), and a valve (5) is connected at the water supply heat pipeline (6) of the heat user (2).

3. A hydraulic balance adjustment system for a heating secondary network according to claim 1 or 2, characterized in that a second pressure sensor is provided in the heat exchange station (1).

4. A hydraulic balance regulating system for a heat supply secondary network according to claim 2, characterized in that valve wells (7) are arranged at the heat supply pipelines of a plurality of heat users (2), and the first pressure sensor (4), the electric regulating valve (3) and the valve (5) are arranged in the valve wells (7).