CN216047957U - Supply return water protection pipe network - Google Patents

Abstract

The utility model provides a water supply and return protection pipe network, which relates to the technical field of heat supply and comprises a heat exchange unit, wherein the heat exchange unit is respectively connected with a primary net water supply pipe, a primary net water return pipe, a secondary net water supply pipe and a secondary net water return pipe, the primary net water return pipe is connected with the secondary net water return pipe through a first water supplementing pipeline, and the primary net water supply pipe is connected with the secondary net water supply pipe through a second water supplementing pipeline. According to the water supply and return protection pipe network provided by the utility model, heat transmission between the primary station and the secondary network of a power plant is realized by utilizing the heat exchange unit, the first water supply pipeline supplies water in the primary network water return pipe to the secondary network water return pipe, the trouble that a water supply pump and a purification device are additionally arranged on the secondary network water return pipe is eliminated, the second water supply pipeline can supply water in the primary network water supply pipe to the secondary network water supply pipe, the temperature of the water in the secondary network is raised by utilizing high-temperature water in the primary network water supply pipe, and the energy consumption is reduced.

Description

Supply return water protection pipe network

Technical Field

The utility model belongs to the technical field of heat supply, and particularly relates to a water supply and return protection pipe network.

Background

With the increase of the demand of urban central heating, the existing pipe network is difficult to meet the demand of heat supply due to the limitation of flow and temperature. In order to improve the transmission capacity, heating enterprises mostly consider adopting a large-temperature-difference unit for heat supply, and particularly aiming at heat production units such as a power plant and the like, the heat supply demand of urban residents can be met by adopting the large-temperature-difference unit for heat supply and a long-distance transmission mode. The heat that heat production units such as power plant produced circulates inside the primary network, carries out the heat exchange through the secondary network of heat exchanger group with the hot station, realizes thermal transmission, carries out the heat exchange between the secondary network of hot station and the cubic network in the urban district again, makes the heat finally carry to the customer end.

Since the water loss occurs inside the secondary net, water needs to be added to the secondary net. The traditional mode of moisturizing through the moisturizing pump causes the reduction of temperature easily, has influenced the bulk temperature of the inside water of secondary network, and the energy consumption of moisturizing pump has also caused the promotion of heat supply cost in addition, is unfavorable for realizing the economic nature of heat supply.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a water supply and return protection pipe network which can supplement water from one network to two networks, is convenient to realize the supplement of water with the same temperature, is beneficial to reducing energy consumption and ensures heat supply quality.

In order to achieve the purpose, the utility model adopts the technical scheme that: the water supply and return protection pipe network comprises a heat exchange unit, wherein a primary net water supply pipe, a primary net water return pipe, a secondary net water supply pipe and a secondary net water return pipe are respectively connected to the heat exchange unit, and the inlet end of the primary net water supply pipe is connected with a first station water outlet pipe of a power plant; the outlet end of the primary net water return pipe is connected with a first station water inlet pipe of the power plant; the inlet end of the secondary net water supply pipe is connected with the water outlet pipe of the hot station; the outlet end of the secondary net water return pipe is connected with the hot station water inlet pipe;

wherein, link to each other through first moisturizing pipeline between once net wet return and the secondary net wet return, link to each other through second moisturizing pipeline between once net delivery pipe and the secondary net delivery pipe, be equipped with first stop valve on the first moisturizing pipeline, be equipped with the second stop valve on the second moisturizing pipeline.

In some possible implementations, a main regulating valve is disposed on the primary water supply pipe, a first regulating valve is disposed on the first water replenishing pipe, and a second regulating valve is disposed on the second water replenishing pipe.

In some embodiments, the water supply and return protection pipe network further comprises a controller, wherein the controller is electrically connected with the first stop valve and the second stop valve respectively so as to send opening and closing instructions to the first stop valve and the second stop valve;

the controller is electrically connected with the main regulating valve, the first regulating valve and the second regulating valve respectively so as to send regulating instructions to the main regulating valve, the first regulating valve and the second regulating valve respectively.

In some embodiments, the first water replenishing pipeline and the second water replenishing pipeline are respectively provided with a pressure reducing valve, and the pressure reducing valves are electrically connected with the controller to receive pressure reducing commands of the controller.

In some embodiments, the second water replenishing pipeline is provided with a first temperature measuring instrument, the secondary network water supplying pipe is provided with a second temperature measuring instrument, and the first temperature measuring instrument and the second temperature measuring instrument are respectively and electrically connected with the controller to send temperature parameters to the controller.

In some possible implementation modes, a rotational flow dirt separator is arranged on the primary net water supply pipe, and the outlet end of the rotational flow dirt separator is connected with the heat exchange unit.

In some embodiments, the outlet end of the cyclone dirt separator is further provided with a micro-bubble dirt separator, and the outlet end of the micro-bubble dirt separator is connected with the heat exchanger unit.

In some possible implementation modes, a first pressure meter and a first thermometer are arranged on the primary net water supply pipe, and a second pressure meter and a second thermometer are arranged on the primary net water return pipe.

In some possible implementation manners, the outlet end of the primary network water return pipe is further connected with the secondary network water return pipe through a secondary network constant-pressure pipe, and the secondary network constant-pressure pipe is provided with a third stop valve, a third regulating valve and a fourth stop valve which are sequentially arranged along the flow direction of the secondary network constant-pressure pipe.

In some embodiments, the secondary net water return pipe is also provided with a pressure measuring instrument and a flow measuring instrument.

The shown scheme of this application embodiment, compared with the prior art, the shown scheme of this application embodiment, utilize heat exchanger unit to realize the heat transmission between power plant's primary station and the secondary network, first moisturizing pipeline supplyes the water in the primary network return water pipe into the secondary network return water pipe, saved and set up moisturizing pump and purifier's loaded down with trivial details separately on the secondary network return water pipe, second moisturizing pipeline can supply the water in the primary network water pipe to the secondary network water supply intraductally, utilize the high temperature water in the primary network delivery pipe to promote the temperature of secondary network internal water, energy resource consumption is reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic view of a water supply and return protection pipe network provided by an embodiment of the utility model.

Wherein, in the figures, the respective reference numerals:

1. a heat exchanger unit; 11. a primary net water supply pipe; 111. a first pressure gauge; 112. a first thermometer; 113. a main regulator valve; 12. a primary net water return pipe; 121. a second pressure gauge; 122. a second thermometer; 13. a secondary net water supply pipe; 131. a second temperature measuring instrument; 14. a secondary net water return pipe; 141. a pressure gauge; 142. a flow meter; 2. a first water replenishing pipeline; 21. a first shut-off valve; 22. a first regulating valve; 3. a second water replenishing pipeline; 31. a second stop valve; 32. a second regulating valve; 33. a first temperature measuring instrument; 41. a pressure reducing valve; 5. a secondary net constant pressure pipe; 51. a third stop valve; 52. a third regulating valve; 53. a fourth stop valve; 61. a cyclone dirt separator; 62. a microbubble dirt remover.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or be indirectly on the other element. It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be constructed in a particular operation, and are therefore not to be considered limiting. The terms "primary net", "secondary net" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as a "primary web" or a "secondary web" may explicitly or implicitly include one or several of that feature. In the description of the present invention, "a number" means two or more unless specifically limited otherwise.

Referring to fig. 1, a water supply and return protection pipe network according to the present invention will be described. The water supply and return protection pipe network comprises a heat exchange unit 1, wherein the heat exchange unit 1 is respectively connected with a primary net water supply pipe 11, a primary net water return pipe 12, a secondary net water supply pipe 13 and a secondary net water return pipe 14, and the inlet end of the primary net water supply pipe 11 is connected with a first station water outlet pipe of a power plant; the outlet end of the primary net water return pipe 12 is connected with a first station water inlet pipe of the power plant; the inlet end of the secondary net water supply pipe 13 is connected with the water outlet pipe of the hot station; the outlet end of the secondary net water return pipe 14 is connected with the hot station water inlet pipe;

wherein, link to each other through first moisturizing pipeline 2 between primary network wet return 12 and the secondary network wet return 14, link to each other through second moisturizing pipeline 3 between primary network delivery pipe 11 and the secondary network delivery pipe 13, are equipped with first stop valve 21 on the first moisturizing pipeline 2, are equipped with second stop valve 31 on the second moisturizing pipeline 3.

Supply return water protection pipe network that this embodiment provided, compared with the prior art, the supply return water protection pipe network that this embodiment provided, utilize heat exchanger unit 1 to realize the heat transmission between power plant's primary and the secondary network, first moisturizing pipeline 2 supplyes the water in primary network wet return 12 into secondary network wet return 14, the loaded down with trivial details that sets up moisturizing pump and purifier separately on secondary network wet return 14 has been saved, second moisturizing pipeline 3 can supply the water in primary network delivery pipe 11 to secondary network delivery pipe 13 in, the temperature of utilizing the high temperature water in the primary network delivery pipe 11 to the water in the secondary network promotes, energy resource consumption is reduced.

In some possible implementations, referring to fig. 1, the main regulating valve 113 is provided on the main watering pipe 11, the first replenishing water pipe 2 is provided with the first regulating valve 22, and the second replenishing water pipe 3 is provided with the second regulating valve 32.

The main regulating valve 113 can regulate and control the water supply amount of the water supplied in the primary network water supply pipe 11, when the first water replenishing pipeline 2 and the second water replenishing pipeline 3 need to replenish water to the secondary network, the water flow amount of the primary network water needs to be increased through the main regulating valve 113, so that the water amount in the primary network is sufficient, and the water replenishing requirements of the first water replenishing pipeline 2 and the second water replenishing pipeline 3 on the secondary network are met. In addition, the first regulating valve 22 can regulate the water supplementing speed of the secondary net water return pipe 14, and the second regulating valve 32 can regulate the water supplementing speed of the secondary net water supply pipe 13, so that the water supplementing amounts of the secondary net water supply and the secondary net water return are respectively controlled, and good controllability is realized.

In some embodiments, on the basis of supplementing the secondary network with the first water supplementing pipeline 2 and supplementing the secondary network with the second water supplementing pipeline 3, the water supply and return protection pipe network further comprises a controller, wherein the controller is electrically connected with the first stop valve 21 and the second stop valve 31 respectively so as to send opening and closing instructions to the first stop valve 21 and the second stop valve 31;

the controller is electrically connected to the main regulator valve 113, the first regulator valve 22, and the second regulator valve 32, respectively, to send a regulation command to the main regulator valve 113, the first regulator valve 22, and the second regulator valve 32, respectively.

In order to realize the orderly supply of the water quantity in the pipe network, a controller is also arranged. The controller can control the opening and closing of the stop valve and the second stop valve 31. When the water amount in the secondary network is low, the first water replenishing pipeline 2 is required to be used for replenishing water, the controller sends an opening instruction to the first stop valve 21, the first stop valve 21 is opened, and water in the primary network water return pipe 12 enters the secondary network water return pipe 14 through the first water replenishing pipeline 2. The same is true. The controller can also send the start and stop instruction to second stop valve 31 to in resupplying the water in the primary network delivery pipe 11 to the secondary network delivery pipe 13 through second moisturizing pipeline 3, realize the regulation of temperature in the secondary network, reduced energy consumption.

In some embodiments, the above-described features of the first and second water replenishing pipes 2 and 3 may adopt a structure as shown in fig. 1. Referring to fig. 1, the first and second water replenishing pipes 2 and 3 are respectively provided with a pressure reducing valve 41, and the pressure reducing valves 41 are electrically connected with the controller to receive a pressure reducing command of the controller.

The water pressure in the primary network water return pipe 12 is 1.3-1.4 MPa, the water pressure in the secondary network water return pipe 14 is about 1.0 MPa, and the pressure reducing valve 41 arranged on the first water supply pipeline 2 is a safety valve, so that the safe pressure relief of a pipe network can be ensured, the interference of the primary network water return on the pressure of the secondary network water return is avoided, and the normal water pressure in the secondary network is ensured. Similarly, the second water replenishing pipeline 3 is also provided with a pressure reducing valve 41, and the pressure reducing valves 41 on the first water replenishing pipeline 2 and the second water replenishing pipeline 3 are respectively controlled by the controllers, so that the water pressure in the secondary network is kept stable, and the normal operation of subsequent heat supply is realized.

In some embodiments, the above-mentioned characteristic second water replenishing pipeline 3 may adopt a structure as shown in fig. 1. Referring to fig. 1, a first temperature measuring instrument 33 is arranged on the second water replenishing pipeline 3, a second temperature measuring instrument 131 is arranged on the secondary network water supply pipeline 13, and the first temperature measuring instrument 33 and the second temperature measuring instrument 131 are respectively and electrically connected with the controller to send temperature parameters to the controller.

The water temperature of the primary network water supply pipe 11 is about 110 ℃, the water temperature of the secondary network water supply pipe 13 is about 75 ℃, and a large temperature difference exists between the two. When water needs to be supplemented in the secondary network, the second water supplementing pipeline 3 can be opened on the basis of the first water supplementing pipeline 2. The first temperature measuring instrument 33 is arranged on the second water replenishing pipeline 3, so that the water temperature can be monitored in real time, meanwhile, the second temperature measuring instrument 131 is arranged on the secondary water inlet pipe, the water temperature in the secondary network water supply pipe 13 can be measured in real time, the opening and closing of the second water replenishing pipeline 3 with the temperature rising function can be controlled conveniently according to the water temperature lifting amplitude in the secondary network, the supply condition of high-temperature water in the secondary network can be monitored accurately, and the effective regulation of the water temperature in the secondary network can be carried out conveniently.

The controller can receive the temperature parameters of the first temperature measuring instrument 33 and the second temperature measuring instrument 131 in real time, judge the opening and closing of the second stop valve 31 according to a preset program, judge the water quantity respectively supplemented to the secondary network by the first water supplementing pipeline 2 and the second water supplementing pipeline 3 according to the numerical value required to be increased by the temperature, realize the coordinated control of the water quantity and the water temperature in the secondary network, and meet the requirements of water quantity supplementation and temperature regulation.

In some possible implementations, the above-described feature of the primary net water supply pipe 11 is configured as shown in fig. 1. Referring to fig. 1, a cyclone dirt separator 61 is arranged on the primary net water supply pipe 11, and the outlet end of the cyclone dirt separator 61 is connected with the heat exchanger unit 1.

The primary net water supply pipe 11 is provided with a cyclone dirt separator 61 to realize the treatment of the water quality in the primary net water supply pipe 11. On the premise that the water quality of the water in the primary network water supply pipe 11 meets the requirement, the water quality requirement in the secondary network can be ensured, and the stable heat supply of the equipment is ensured. The cyclone dirt separator 61 utilizes the principle of centrifugal separation to remove sand, the water inlet pipe is installed at the eccentric position of the cylinder, after water passes through the water inlet pipe of the cyclone dirt separator 61, oblique downward surrounding fluid is formed along the peripheral tangential direction of the cylinder at first, the water flow pushes downwards in a rotating manner, after the water flow reaches the cone part, the water flow rotates upwards along the axis of the cylinder, the water flow is discharged through the top water pipe at last, impurities fall into the conical slag hopper at the lower part of the equipment along the wall surface of the cone under the action of the inertial centrifugal force of the fluid and the self gravity, and the impurities are separated and removed.

In some embodiments, the above-described features of the primary net water supply pipe 11 may be configured as shown in fig. 1. Referring to fig. 1, a micro-bubble cleaner 62 is further disposed at an outlet end of the cyclone cleaner 61, and an outlet end of the micro-bubble cleaner 62 is connected to the heat exchanger unit 1.

The microbubble cleaner 62 removes impurities according to the principles of centrifugal sedimentation and density difference. The microbubble dirt separator 62 on the existing market is high in dirt removing efficiency and convenient to clean, additionally is additionally provided with a filtering unit, has the advantages of high dirt removing rate and space saving, and is low in leakage catching rate of individual tiny particles and stable in working state.

In some possible implementations, the above-described feature of the primary net water supply pipe 11 is configured as shown in fig. 1. Referring to fig. 1, a first pressure gauge 111 and a first temperature gauge 112 are provided on the primary water supply pipe 11, and a second pressure gauge 121 and a second temperature gauge 122 are provided on the primary water return pipe 12.

The first pressure gauge 111 and the first temperature gauge are arranged on the primary network water supply pipe 11 to monitor the pressure value and the temperature value of water in real time, and transmit the monitoring parameters to the controller. The controller performs opening and closing of the first and second cut-off valves 21 and 31 and control and regulation of the first and second regulating valves 22 and 32 according to a preset program. Similarly, the second pressure gauge 121 and the second temperature gauge 122 may monitor the pressure and temperature values of the primary mesh water return pipe 12, which is not described herein again.

In some possible implementations, referring to fig. 1, the outlet end of the primary-network water return pipe 12 is further connected to the secondary-network water return pipe 14 through a secondary-network constant-pressure pipe 5, and the secondary-network constant-pressure pipe 5 is provided with a third stop valve 51, a third regulating valve 52 and a fourth stop valve 53 which are arranged in sequence along the flow direction of the secondary-network constant-pressure pipe.

A constant pressure water pipe is also arranged between the primary net water return pipe 12 and the secondary net water return pipe 14, and the constant pressure water pipe and the first water replenishing pipeline 2 are mutually connected in parallel. The secondary network constant pressure pipe 5 is arranged, so that the return water in the secondary network can be subjected to constant pressure by virtue of the return water with high parameter pressure in the primary network, the power consumption of the constant pressure pump in the secondary network is eliminated to a certain extent, and the power consumption of a heat station is reduced. When the water supplement of the first water supplement pipe 2 is completed, the first cut-off valve 21 is closed. At this time, the second stop valve 31, the third regulating valve 52 and the fourth stop valve are opened to make the constant pressure pipe in a flowing state, and the third regulating valve 52 is used for regulating the pressure of water in the constant pressure pipe, so that the constant pressure effect on the secondary network water return pipe 14 is realized, and the power loss of the original constant pressure pump of the secondary network is reduced.

In some embodiments, the above-described features of secondary wire return 14 may be implemented as shown in FIG. 1. Referring to fig. 1, a pressure measuring instrument 141 and a flow measuring instrument 142 are further provided on the secondary-network water return pipe 14.

The pressure measuring instrument 141 and the flow measuring instrument 142 arranged on the secondary network water return pipe 14 can monitor the pressure and the flow on the secondary network water return pipe 14 in real time, and when the parameter value is in an abnormal range, a control instruction is sent to other elements through the controller so as to carry out pressure maintaining operation and ensure the effective operation of water in the secondary network.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The water supply and return protection pipe network is characterized by comprising a heat exchange unit, wherein a primary net water supply pipe, a primary net water return pipe, a secondary net water supply pipe and a secondary net water return pipe are respectively connected to the heat exchange unit, and the inlet end of the primary net water supply pipe is connected with a first station water outlet pipe of a power plant; the outlet end of the primary net water return pipe is connected with the power plant initial station water inlet pipe; the secondary net water supply pipe is connected with the hot station water inlet pipe; the secondary net water return pipe is connected with a hot station water outlet pipe;

the primary net water return pipe is connected with the secondary net water return pipe through a first water supplementing pipeline, the primary net water supply pipe is connected with the secondary net water supply pipe through a second water supplementing pipeline, a first stop valve is arranged on the first water supplementing pipeline, and a second stop valve is arranged on the second water supplementing pipeline.

2. The water supply and return protection pipe network of claim 1, wherein a main regulating valve is provided on the primary water supply pipe, a first regulating valve is provided on the first water supply pipe, and a second regulating valve is provided on the second water supply pipe.

3. The water supply and return protection pipe network of claim 2, further comprising a controller, wherein the controller is electrically connected with the first stop valve and the second stop valve respectively, and is used for sending opening and closing instructions to the first stop valve and the second stop valve;

the controller is electrically connected with the main regulating valve, the first regulating valve and the second regulating valve respectively so as to send regulating instructions to the main regulating valve, the first regulating valve and the second regulating valve respectively.

4. The water supply and return protection pipe network of claim 3, wherein the first water supply pipeline and the second water supply pipeline are respectively provided with a pressure reducing valve, and the pressure reducing valves are electrically connected with the controller to receive a pressure reducing instruction of the controller.

5. The water supply and return protection pipe network of claim 3, wherein a first temperature measuring instrument is arranged on the second water supply pipeline, a second temperature measuring instrument is arranged on the secondary network water supply pipeline, and the first temperature measuring instrument and the second temperature measuring instrument are respectively and electrically connected with the controller so as to send temperature parameters to the controller.

6. The water supply and return protection pipe network of claim 1, wherein a cyclone dirt separator is arranged on the primary water supply pipe, and the outlet end of the cyclone dirt separator is connected with the heat exchange unit.

7. The water supply and return protection pipe network of claim 6, wherein the outlet end of the cyclone dirt separator is further provided with a micro-bubble dirt separator, and the outlet end of the micro-bubble dirt separator is connected with the heat exchange unit.

8. The supply and return water protection pipe network of claim 1, wherein a first pressure gauge and a first temperature gauge are provided on the primary water supply pipe, and a second pressure gauge and a second temperature gauge are provided on the primary water return pipe.

9. The water supply and return protection pipe network of any one of claims 1-8, wherein the outlet end of the primary net return pipe is further connected with a secondary net return pipe through a secondary net constant pressure pipe, and the secondary net constant pressure pipe is provided with a third stop valve, a third regulating valve and a fourth stop valve which are arranged in sequence along the flow direction of the secondary net constant pressure pipe.

10. The supply and return water protection pipe network of claim 9, wherein the secondary network return water pipe is further provided with a pressure measuring instrument and a flow measuring instrument.

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