CN211781351U

CN211781351U - Novel directly link pressure boost and mix water heat supply unit

Info

Publication number: CN211781351U
Application number: CN201921835959.1U
Authority: CN
Inventors: 邓县县; 刘赛; 江斌
Original assignee: Shanghai Panda Machinery Group Co Ltd
Current assignee: Shanghai Panda Machinery Group Co Ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-10-27
Anticipated expiration: 2029-10-30

Abstract

A novel direct-connected pressurized water-mixing heat supply unit comprises 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 controller; direct-connected pressure boost mix water heat supply unit including heat supply side pipe network and user secondary side pipe network, through set up the muddy water pipe between side pipe network delivery pipe and secondary side pipe network wet return in this embodiment, become indirect heat transfer system and directly mix water system, cancel the heat transfer end difference, can reduce system's calorific loss, improve heat exchange efficiency, further reduce the circulating pump lift, be favorable to sparingly operating energy consumption and operation maintenance.

Description

Novel directly link pressure boost and mix water heat supply unit

Technical Field

The utility model relates to a directly link pressure boost and mix water heat supply unit belongs to the heating equipment field.

Background

In the existing mainstream heat supply industry, the main heat exchange equipment of heat exchange station uses plate heat exchanger as the owner more, the heat source carries out the heat exchange through plate heat exchanger's slab, guarantee like this that side pipe network and user secondary side pipe network are independent each other, operating condition and quality of water are all not influenced, but there is the heat exchange efficiency low yet, plate heat exchanger both sides fluid has the heat transfer end difference, must lead to the fact unnecessary energy waste, in addition, the user circulating pump still need undertake heat exchanger resistance loss, influence system operating efficiency, further cause the energy waste, be unfavorable for maintaining and operation management. The connection between the plate heat exchanger slab generally relies on elastic rubber gasket, or bonds, or articulates, and the gasket is installed after the slab, relies on two backplate extrudees to seal the runner between the slab, because rubber gasket appears ageing fracture easily, and life is limited, appears leaking between the slab easily, probably causes the splash accident when high pressure operation, and is unsafe, for solving above-mentioned technical problem, development design a novel directly link pressure boost muddy water heat supply unit seems especially crucial, can solve energy consumption and safety problem.

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 the dismouting, reduce calorific loss, avoid the novel directly link pressure boost pressure mixing water heat supply unit of splash accident, the utility model discloses a solve the technical scheme that technical problem that exists in the above-mentioned technique took and be: a novel direct-connected pressurized water-mixing heat supply unit comprises 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 controller; the direct-connection pressurizing water mixing heat supply unit comprises a heat supply primary side pipe network and a user secondary side pipe network; wherein the controller 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 arranged on the primary side pipe network water supply pipe and the water return pipe, the temperature sensor is respectively arranged on the primary side pipe network water supply pipe, the secondary side pipe network water supply pipe and the water return pipe, the temperature sensor transmits the detected temperature signal to the controller, and the controller controls the opening degree of the proportional integral electric regulating valve according to the temperature signal, according to user side load regulation user side flow, the circulating pump sets up on user secondary side delivery pipe, and pressure sensor installs respectively on side pipe network delivery pipe and secondary side pipe network delivery pipe and wet return, and pressure sensor gives the controller with the pressure signal transmission who detects, and the controller controls the operating frequency of circulating pump according to this, the utility model discloses an advantage and positive effect are: the utility model provides a simple reasonable straight linking pressure boost mixes water heat supply unit of structural design compares with traditional plate heat exchanger unit, through set up water admixing device between side pipe network delivery pipe and secondary side pipe network wet return in this embodiment, becomes indirect heat transfer system direct water admixing system, and cancellation heat transfer end is poor, can the loss of reduction system heat, improves heat exchange efficiency, further reduces the circulating pump lift, is favorable to energy consumption and operation maintenance of sparingly running.

Drawings

Fig. 1 is a flow chart of the structure of the direct-connection pressurized water-mixing heat supply unit of the utility model; illustration of the drawings: 1. manual butterfly valve 2, Y type filter 3, proportion integral electric control valve 4, pressure sensor 5, manometer 6, mix water pipe 7, thermometer 8, temperature sensor 9, circulating water pump 10, check valve 11, electric contact pressure gauge 12, relief valve 13, relief pressure valve 14, calorimeter, figure 2 is directly connected pressure boost and mixes water heat supply unit control chart.

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 controller controls the proportional-integral electric regulating valve to be opened from a closed state, water flows into 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 flows are pumped into a user system through the circulating pump, the water 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, a secondary: 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 working condition, the water mixing system sets a water mixing ratio according to the primary side water supply and return temperature (generally a fixed value) of a heat source and the secondary side water supply and return temperature (generally a fixed value) of a user, and the flow of the system is enabled to operate under the design working condition by adjusting the opening degrees of proportional integral electric adjusting valves of a primary side water supply pipe and a water return pipe. When the load of the user side changes, the opening degree of the proportional-integral electric regulating valve is adjusted through the return water temperature change condition detected by the temperature sensor arranged on the secondary side water return pipe, so that the flow of the user side is adjusted, the return water temperature of the user is kept stable, the running frequency of the circulating pump is adjusted through the pressure difference change condition detected by the pressure sensor arranged on the secondary side water return pipe, and the flow of the user side is adjusted to adapt to the load change condition of the user side.

Claims

1. The utility model provides a novel directly link pressure boost and mix water heat supply unit which characterized in that: the device comprises 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 controller; the direct-connection pressurizing water mixing heat supply unit comprises a heat supply primary side pipe network and a user secondary side pipe network: the primary side pipe network water supply pipe and the secondary side pipe network water supply pipe are provided with a water outlet pipe, a water inlet pipe, a water outlet.

2. The novel direct-connected pressurized water mixing and heating unit set according to claim 1, characterized in that: the heat supply 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 with the controller.

3. The novel direct-connected pressurized water mixing and heating unit set according to claim 1, characterized in that: the user 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 with the controller.

4. The novel direct-connected pressurized water mixing and heating unit set according to claim 1, characterized in that: the direct-connected pressurized mixed water heat supply unit effectively utilizes the mixing of secondary side low-temperature backwater and primary side high-temperature water supply, and plays a role in reducing consumption and saving energy.

5. The novel direct-connected pressurized water mixing and heating unit set according to claim 1, characterized in that: the primary side water supply pipe and the water mixing pipe are connected through a straight pipe, and the primary side water return pipe is provided with an electric regulating valve for controlling the return water flow.

6. The novel direct-connected pressurized water mixing and heating unit set according to claim 1, characterized in that: and the inlet of the circulating water pump and the inlet of the standby circulating water pump are connected to the water mixing pipe in parallel.

7. The novel direct-connected pressurized water mixing and heating unit set according to claim 1, characterized in that: the water mixing pipe is composed of a cylinder body, a primary side high-temperature water supply interface, a secondary side low-temperature water return branch interface and a water pump suction inlet.

8. The novel direct-connected pressurized water mixing and heating unit set according to claim 1, characterized in that: the control ends of the circulating water pump and the standby circulating water pump are connected with the controller through a frequency converter.