CN211781350U - Unattended box type mixed water heat supply unit - Google Patents

Abstract

The utility model relates to an unmanned on duty type box mixes water heat supply unit, including box frame, circulating water pump, intercommunication pipeline, proportional-integral electric control valve, temperature sensor, pressure sensor, calorimeter, and unit switch board, because the heat exchanger group who is connected with the heat supply heat source is installed on a computer lab base that can wholly remove, can carry out whole batch production and module change production with the heat exchanger group, and can put into use fast, only need supply the return water interface with the outer heat source pipe network butt joint once of this unit during the installation can, need not newly-built computer lab, area is little; the secondary side water supply and return connection pipe is directly butted with the user side, so that the construction period is greatly shortened, and various expenses such as field installation cost, design cost, machine room operation management cost and the like are saved.

Description

Unattended box type mixed water heat supply unit

Technical Field

The utility model relates to an unmanned on duty type box mixes water heat supply unit belongs to the heating equipment field.

Background

The central heating is an important sign of urban modernization, is an important measure for saving energy and improving the environment, and along with the continuous development of the heating career, the majority of users put forward higher requirements for the safety, stability, economy, heating quality and the rapid operation of a heat exchange station, the existing old urban area newly-built heating machine room is difficult in site selection and land utilization, and the heat exchange station adopting the original structure has certain defects and deficiencies, and is mainly embodied as follows: the heat supply unit is simple and reasonable in structure, only a primary side water supply and return interface of the unit needs to be in butt joint with an external heat source pipe network during installation, a new machine room is not needed, and the occupied area is small; the secondary side water supply and return connection pipe is directly butted with the user side, so that the construction period is greatly shortened, and various expenses such as field installation cost, design cost, machine room operation management cost and the like are saved.

Disclosure of Invention

The utility model discloses a solve the technical problem that exists in the above-mentioned technique and provide a simple structure, be convenient for dismouting, reduce calorific loss, shorten construction period, save the unmanned on duty type box-type that multiple expenses such as on-the-spot installation expense, design expense, computer lab operation management expense mix water heat supply unit, the utility model discloses a technical scheme who takes for the technical problem who exists in solving above-mentioned technique is: an unattended box type mixed water heat supply unit comprises a box body frame, a proportional-integral electric regulating valve, a temperature sensor, a pressure sensor, a water mixing pipe, a circulating water pump, a standby circulating water pump and a unit control cabinet; the unattended box type mixed water heat supply unit comprises a heat supply primary side pipe network and a user secondary side pipe network; the unit control cabinet is respectively connected with the circulating water pump, the proportional-integral electric regulating valve, the temperature sensor and the pressure sensor, the proportional-integral electric regulating valve is respectively installed on a primary side pipe network water supply pipe and a return water pipe, the temperature sensor is respectively installed on the primary side pipe network water supply pipe, a secondary side pipe network water supply pipe and the return water pipe, the temperature sensor transmits a detected temperature signal to the unit control cabinet, the unit control cabinet controls the opening degree of the proportional-integral electric regulating valve according to the detected temperature signal, the user side flow is adjusted according to the user side load, the circulating pump is arranged on the user secondary side water supply pipe, the pressure sensor is respectively installed on the primary side pipe network water supply pipe, the secondary side pipe network water supply pipe and the return water pipe, the pressure sensor transmits the detected pressure signal. The box frame has the heating device that prevents frostbite, and the pipe network protect function that prevents frostbite, the box top does not have the trompil, and there is exhaust apparatus box side, the utility model discloses an advantage is with positive effect: 1. the utility model discloses install circulating water pump, intercommunication pipeline, proportional-integral electric control valve, temperature sensor, pressure sensor, calorimeter, and unit control cabinet facility on a mobilizable computer lab base, because the heat exchanger group who is connected with the heat supply heat source is installed on a computer lab base that can wholly remove, when for old city district central heating, can carry out holistic batch production and module change production with the heat exchanger group, and can put into operation fast, only need during the installation with the once side supply return water interface of this unit with the butt joint of outer heat source pipe network can, need not newly-built computer lab, area is little; the utility model discloses a secondary side supplies backwater takeover to dock with the user side directly, shortens construction period greatly, saves multiple expenses such as on-the-spot installation expense, design expense, computer lab operation management expense, 2, the utility model discloses have good environmental protection performance, box unit noise is low, compact structure, the appearance is pleasing to the eye, easy operation, safe and reliable, and the heat preservation effect is good, and the box can be opened on four sides, and maintenance is extremely simple and convenient, 3 the utility model discloses structural strength satisfies natural loads such as wind, snow, ice, unrestrained, and the equipment operation system can long-range automatic control operation, remote alarm, prevents frostbite and prevents pressing etc. guarantee unit operation safe and reliable comprehensively, realizes unmanned on duty, practices thrift the manpower; and possess the module and trade the design, nimble configuration, the extension is convenient, 4 the utility model discloses box mixes water heat supply unit has not only realized quick travel, the configuration is nimble, has also realized the unmanned on duty state of remote control, installs circulating water pump, intercommunication pipeline, proportional-integral electric control valve, temperature sensor, pressure sensor, calorimeter, and unit switch board in mobilizable box frame, compact structure.

Drawings

Fig. 1 is a flow chart of the system structure of the present invention, which is illustrated in the figure: 1. the device comprises a manual butterfly valve 2, a Y-shaped filter 3, a proportional-integral electric regulating valve 4, a pressure sensor 5, a pressure gauge 6, a water mixing pipe 7, a thermometer 8, a temperature sensor 9, a circulating water pump 10, a check valve 11, an electric contact pressure gauge 12, a safety valve 13, a pressure reducing valve 14 and a calorimeter.

Detailed Description

For further understanding of the contents, features and functions of the present invention, the following embodiments are described in detail: the working principle of the embodiment is as follows: when the circulating water pump is started, the unit control cabinet controls the proportional-integral electric regulating valve to be opened from a closed state, water flow enters the water mixing pipe through the proportional-integral electric regulating valve to be mixed with return water of a secondary side pipe network, then the water flow is pumped into a user system through the circulating pump, the water flow returns to a primary side pipe network after the circulation of the user system, the circulation of the whole system is completed, the control system adjusts the flow of the system by adjusting the actual mixing ratio and changing the running frequency of the circulating pump and the opening degree of the proportional-integral electric regulating valve, and the water mixing pipe is composed of a cylinder body, a primary side high-temperature water supply interface: the part of the secondary side low-temperature backwater branch pipe extending into the barrel is a water distribution pipe, water distribution holes are formed in the periphery of the water distribution pipe, the primary side high-temperature water and the secondary side low-temperature backwater are fully mixed and subjected to heat exchange in the barrel to reach the secondary side water supply temperature, and the working process of the embodiment is as follows: under the design condition, the water mixing system sets a water mixing ratio according to the primary side supply return water temperature (generally a fixed value) of a heat source and the secondary side supply return water temperature (generally a fixed value), the opening degree of a proportional integral electric regulating valve of a primary side water supply pipe and a return water pipe is regulated, the system flow is enabled to operate in the design condition, when the user side load changes, the return water temperature change condition detected by a temperature sensor arranged on the secondary side return water pipe is regulated, the opening degree of the proportional integral electric regulating valve is regulated, the user side flow is further regulated, the user supply return water temperature is enabled to be kept stable, the pressure difference change condition detected by a pressure sensor arranged on the secondary side supply return water pipe is utilized to regulate the operation frequency of a circulating pump, the user side flow is further regulated, and the user side.

Claims (5)

1. Unmanned on duty type box-like mixes water heat supply unit, its characterized in that: the system comprises a box body framework, a primary side pipe network system, a secondary side pipe network system and a unit control cabinet; the unattended box type mixed water heating unit is characterized in that all facilities are installed in a movable container.

2. An unattended box-type mixed water heating unit according to claim 1, characterised in that: the primary side pipe network comprises a primary side water supply pipe, a primary side water supply electric proportional control valve, a temperature sensor, a pressure sensor, a primary side water return pipe and a primary side water return electric proportional control valve; the primary side water supply electric proportional control valve, the primary side water supply temperature sensor, the primary side water supply pressure sensor and the primary side water return electric proportional control valve are all connected to the unit control cabinet.

3. An unattended box-type mixed water heating unit according to claim 1, characterised in that: the secondary side pipe network comprises a secondary side water supply pipe, a secondary side water supply circulating water pump, a temperature sensor, a pressure sensor, a secondary side water return pipe and a secondary side water return pressure reducing valve; and the secondary side water supply circulating water pump, the temperature sensor and the pressure sensor are all connected to the unit control cabinet.

4. An unattended box-type mixed water heating unit according to claim 1, characterised in that: the box frame has the heating device that prevents frostbite, and the pipe network protects the function that prevents frostbite, and there is not the trompil at the box top, and there is ventilation shutter box side.

5. An unattended box-type mixed water heating unit according to claim 1, characterised in that: when the unattended box type mixed water heat supply unit is installed, only a primary side water supply and return interface of the unit is in butt joint with an external heat source pipe network; the secondary side water supply and return connecting pipe is directly butted with the user side.

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