CN217679423U - Constant pressure water supplementing device - Google Patents
Constant pressure water supplementing device Download PDFInfo
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- CN217679423U CN217679423U CN202221713277.5U CN202221713277U CN217679423U CN 217679423 U CN217679423 U CN 217679423U CN 202221713277 U CN202221713277 U CN 202221713277U CN 217679423 U CN217679423 U CN 217679423U
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Abstract
The utility model discloses a level pressure moisturizing device, it includes: the pump front header pipe is provided with a water inlet and is internally provided with a cavity; the water replenishing pipeline is respectively connected with a water source of the front main pipe of the pump, and is provided with a first valve; the drainage pipeline is communicated with the front pump header pipe and is provided with a second valve; the input end of the water pump is communicated with the front main pipe of the pump through a water inlet pipeline; the upper end and the lower end of the pump rear header pipe are both closed, a cavity is arranged in the pump rear header pipe, the cavity is divided into an upper part and a lower part which are respectively a pressure relief cavity and a pressure compensation cavity, and the pressure relief cavity and the pressure compensation cavity are mutually isolated; a system water replenishing port and a system pressure relief port are arranged on the pump rear main pipe, the system water replenishing port is communicated with the pressure replenishing cavity, and the system pressure relief port is communicated with the pressure relief cavity; the output end of the water pump is communicated with the pressure compensating cavity through a water outlet pipeline; two pressure relief pipelines are provided, one end of each of the two pressure relief pipelines is communicated with the cavity in the front main pipe of the pump, and the other end of each of the two pressure relief pipelines is communicated with the pressure relief cavity; and the two pressure relief pipelines are provided with third valves.
Description
Technical Field
The utility model relates to an air conditioner water system auxiliary assembly field, concretely relates to level pressure moisturizing device for closed air conditioner water system.
Background
The air conditioning water system is an important part of the air conditioning system, and water circulates in the air conditioning water system and continuously exchanges heat.
Air conditioning water systems are mainly divided into open type and closed type. Because the closed air-conditioning water system is isolated from the outside, the internal pressure of the closed air-conditioning water system is not constant, and in general, when the temperature of water in a pipeline of the system changes, the water pressure in the pipeline changes along with the fluctuation of the temperature of the system: when the temperature of the system rises, the pressure of the system rises, and the system needs to be decompressed; when the temperature of the system is reduced, the pressure of the system is reduced, and the system needs to be supplemented with pressure. Therefore, a constant-pressure water replenishing device needs to be externally connected to the closed air-conditioning water system to meet the pressure relief and pressure replenishing requirements of the system under different conditions, so that the purpose of stabilizing the internal pressure of the closed air-conditioning water system is achieved.
The inventor notices that current level pressure moisturizing device for closed air conditioner water system only adopts pressure release pipeline all the way usually, for abundant pressure release this moment, then need strengthen this pipe diameter of pressure release pipeline all the way as far as possible, and because the pipe diameter is great, the opening of relief valve is closed the required time also longer, leads to unable assurance system pressure stable, further causes equipment frequent switching between pressure compensation and pressure release, finally leads to the fault rate high, needs often to overhaul.
SUMMERY OF THE UTILITY MODEL
Therefore, the application provides a constant pressure moisturizing device to solve the above-mentioned problem that exists among the prior art.
In order to achieve the above object, the present application provides the following technical solutions:
the application provides level pressure moisturizing device, it includes:
mounting a platform;
the pump front header pipe is vertically arranged, and the lower end of the pump front header pipe is installed on the installation platform; the upper end and the lower end of the front pump header pipe are both closed, and a cavity is arranged in the front pump header pipe; the pump front header pipe is provided with a water inlet which is used for being connected with a normal pressure expansion tank in a closed air-conditioning water system;
one end of the water replenishing pipeline is used for being connected with a water replenishing source, and the other end of the water replenishing pipeline is communicated with a cavity in the front main pipe of the pump; a first valve is arranged on the water replenishing pipeline;
one end of the drainage pipeline is communicated with a cavity in the front main pipe of the pump; a second valve is arranged on the drainage pipeline;
the water pump is arranged on the mounting platform; the input end of the water pump is communicated with a cavity in the front main pipe of the pump through a water inlet pipeline;
the rear pump header pipe is vertically arranged, and the lower end of the rear pump header pipe is installed on the installation platform; the upper end and the lower end of the pump rear header pipe are both closed, a cavity is arranged in the pump rear header pipe, the cavity is divided into an upper part and a lower part, the upper part is a pressure relief cavity, the lower part is a pressure compensation cavity, and the pressure relief cavity and the pressure compensation cavity are mutually isolated; a system water replenishing port and a system pressure relief port are arranged on the pump rear main pipe, the system water replenishing port is communicated with the pressure replenishing cavity, and the system pressure relief port is communicated with the pressure relief cavity; the output end of the water pump is communicated with the pressure compensating cavity through a water outlet pipeline;
two pressure relief pipelines are provided, one end of each of the two pressure relief pipelines is communicated with the cavity in the front main pipe of the pump, and the other end of each of the two pressure relief pipelines is communicated with the pressure relief cavity; and the two pressure relief pipelines are provided with third valves.
Optionally, the two pressure relief pipelines are parallel to each other and arranged up and down.
Optionally, the first valve and the second valve are both open-close type electric valves, and the third valve is a proportional valve.
Further optionally, the installation platform further comprises a control cabinet, and the control cabinet is installed on the installation platform; be provided with PLC in the switch board, first valve, second valve and third valve all are equipped with control signal input part, and PLC's control signal output part is connected with the control signal input part electricity of first valve, second valve and third valve respectively.
Compared with the prior art, the application has at least the following beneficial effects:
(1) The utility model provides a pair of level pressure moisturizing device through setting up two pressure release pipelines, realizes the multistage adjustment of segmentation to closed air conditioner water system internal pressure, particularly, the work flow of this device as follows: one end of the water replenishing pipeline is used for being connected with a water replenishing source, the other end of the water replenishing pipeline is communicated with the cavity in the front main pipe of the pump, the drainage pipeline can be externally connected with a wastewater recovery device and can also be directly communicated with a sewer and the like as long as water can be supplied and drained, a water inlet on the front main pipe of the pump is used for being connected with a normal pressure expansion tank in a closed air-conditioning water system, and water is contained in the normal pressure expansion tank; when the water system needs pressure compensation, the water pump is controlled to be started, water in the normal-pressure expansion tank is pumped into the front main pipe of the pump from the water inlet, the water enters the water pump from the front main pipe of the pump through the water inlet pipeline, then is pumped into the pressure compensation cavity from the water outlet pipeline, and then flows into the water system through the water compensation port of the system to compensate the pressure of the water system; when the pressure of a water system is overlarge, redundant water can enter a pressure relief cavity from a pressure relief port of the system, at the moment, a third valve on one pressure relief pipeline is gradually opened, the redundant water flows into a front main pipe of a pump through the pressure relief pipeline and then flows into a normal-pressure expansion tank through a water inlet to play a role in pressure relief, if the third valve is opened to the maximum, the pressure cannot be completely relieved, the third valve on the other pressure relief pipeline is continuously and gradually opened, the water is continuously drained and the pressure is relieved until the pressure of the water system is recovered to be stable, and the third valve is closed; compared with the traditional single pressure relief pipeline, the pipeline diameter can be reduced, the pressure relief valves can be opened and closed conveniently, the pressure regulation accuracy and stability are improved, the segmented multi-stage accurate adjustment on the pressure relief pressure of the water system can be realized, and the problem that the device fails due to the fact that the pressure relief degree cannot be accurately adjusted by the single pressure relief pipeline, the pressure relief head is over-relieved, and the device is further switched back and forth between a pressure relief mode and a pressure compensation mode is solved; when the water level in the constant-pressure expansion tank is too low, controlling a first valve to be opened, introducing water in a water supplementing water source into a front main pipe of the pump through a water supplementing pipeline, further introducing the water into the normal-pressure expansion tank through a water inlet, supplementing water to the normal-pressure expansion tank, and closing the first valve after the water level in the normal-pressure expansion tank rises to a proper height; when the water level in the normal pressure expansion tank is too high, controlling the second valve to open, so that the water in the normal pressure expansion tank flows into the front main pipe of the pump from the water inlet and is further discharged through the drainage pipeline, playing a role of reducing the water level, and closing the second valve after the water level in the normal pressure expansion tank is reduced to a proper height; the liquid level in the normal pressure expansion tank is controlled, so that the situations that the pressure supplementing water flow is insufficient due to too low water level when the water system needs pressure supplementing and the pressure relief is difficult due to too high water level when the water system needs pressure relief can be effectively avoided.
(2) The utility model provides a pair of level pressure moisturizing device can set up the third valve into the proportional valve optionally, controls through the proportional valve, thereby can be through the pressure release degree of opening proportion control water system of accurate control valve, make the multistage accurate adjustment of segmentation to water system pressure release pressure more automatic, intelligent.
(3) The utility model provides a pair of level pressure moisturizing device can set up first valve and second valve into switch type solenoid valve optionally, through carrying out automated control to these two solenoid valves, for example adopt the singlechip to control, adopt PLC to control etc. just do not need artifical manually operation when carrying out moisturizing and drainage with the control liquid level to the ordinary pressure expansion tank, and it is more convenient to use, and the response is rapider, and is more automatic, intelligent.
(4) The utility model provides a pair of level pressure moisturizing device can set up PLC optionally (programmable logic controller, PLC for short below all), carries out automated control to first valve, second valve and third valve, and is same, in the in-service use, also can insert PLC with the water pump, together carries out automated control.
Drawings
Fig. 1 is a schematic overall structural diagram of a constant-pressure water replenishing device according to an embodiment of the present application;
fig. 2 is a front view of a constant pressure water replenishing device provided in an embodiment of the present application;
FIG. 3 is a left side view of a constant pressure water replenishing apparatus provided in an embodiment of the present application;
fig. 4 is a top view of a constant-pressure water replenishing device provided in the embodiment of the present application.
Description of reference numerals:
in the figure, 1-installation platform, 2-front main pipe of pump, 3-water inlet, 4-water replenishing pipeline, 5-first valve, 6-drainage pipeline, 7-second valve, 8-water pump, 9-water inlet pipeline, 10-rear main pipe of pump, 11-system water replenishing port, 12-system pressure relief port, 13-water outlet pipeline, 14-pressure relief pipeline, 15-third valve and 16-control cabinet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In the description of the present invention, "a plurality" means two or more unless otherwise specified. The terms "first," "second," "third," "fourth," and the like in the description and claims of the present invention and in the above-described drawings (if any) are intended to distinguish between the referenced items. For a scheme with a time sequence flow, the expression of the terms is not necessarily understood to describe a specific sequence or order, and for a scheme with a device structure, the expression of the terms does not have distinction of importance degree, position relation and the like.
Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements specifically listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus or added steps based on further optimization of the inventive concepts.
The embodiment provides a constant-pressure water replenishing device, as shown in fig. 1 to 4; the constant-pressure water replenishing device provided by the embodiment is suitable for a closed air-conditioning water system; the constant pressure moisturizing device that this embodiment provided includes:
mounting a platform 1;
the pump front header pipe 2 is vertically arranged, and the lower end of the pump front header pipe is installed on the installation platform 1; the upper end and the lower end of the pump front main pipe 2 are both closed, and a cavity is arranged in the pump front main pipe; the front pump header pipe 2 is provided with a water inlet 3, and the water inlet 3 is communicated with a normal pressure expansion tank in a closed air-conditioning water system in actual use;
one end of the water replenishing pipeline 4 is connected with a water replenishing source, and the other end of the water replenishing pipeline is communicated with a cavity in the front pump header pipe 2; a first valve 5 is arranged on the water supplementing pipeline 4; one end of the drainage pipeline 6 is communicated with a cavity in the front pump header pipe 2; a second valve 7 is arranged on the drainage pipeline 6; in the embodiment, the first valve 5 and the second valve 7 are both switch-type electric valves, so that automatic control is facilitated, manual operation is not needed, the use is more convenient, and the response is quicker;
the two water pumps 8, the two water pumps 8 are both installed on the installation platform 1; the input ends of the two water pumps 8 are respectively communicated with the cavity in the front pump header pipe 2 through a water inlet pipeline 9;
the pump rear main pipe 10 is vertically arranged, and the lower end of the pump rear main pipe is installed on the installation platform 1; the upper end and the lower end of the pump rear header pipe 10 are both closed, a cavity is arranged in the pump rear header pipe, the cavity is divided into an upper part and a lower part, the upper part is a pressure supplementing cavity, the lower part is a pressure releasing cavity, and the pressure supplementing cavity and the pressure releasing cavity are mutually isolated to prevent water flow short circuit; a system water replenishing port 11 and a system pressure relief port 12 are arranged on the pump rear main pipe 10, the system water replenishing port 11 is communicated with the pressure replenishing cavity, and the system pressure relief port 12 is communicated with the pressure relief cavity; the output ends of the two water pumps 8 are respectively communicated with the cavity in the pump rear main pipe 10 through a water outlet pipeline 13;
two pressure relief pipelines 14, wherein one end of each of the two pressure relief pipelines 14 is communicated with the cavity in the front pump header pipe 2, and the other end is communicated with the pressure relief cavity in the rear pump header pipe 10; the two pressure relief pipelines 14 are respectively provided with a third valve 15, in the embodiment, the third valve 15 is a proportional valve, and is controlled by the proportional valve, so that the pressure relief degree of the water system can be controlled by accurately controlling the opening proportion of the valves, and the segmented multi-stage accurate adjustment of the pressure relief pressure of the water system is more automatic and intelligent; in this embodiment, the two pressure relief pipelines 14 are parallel to each other and are disposed up and down, and are perpendicular to the front pump manifold 2 and the rear pump manifold 10, respectively.
In the embodiment, the first valve 5 and the second valve 7 are both open-close type electric valves, and the third valve 15 is a proportional valve, so that the automatic control can be conveniently carried out in actual use; at present, various automatic control means exist, for example, a single chip microcomputer is adopted for control, a PLC is adopted for control, and the like, and the PLC is selected for automatic control in the embodiment; in the embodiment, a control cabinet 16 is arranged, the control cabinet 16 is arranged on the mounting platform 1, the PLC is arranged in the control cabinet 16, so that the PLC is protected conveniently, and a conventional circuit required by the operation of the device is arranged in the control cabinet 16; the first valve 5, the second valve 7 and the third valve 15 are all provided with control signal input ends, and the control signal output ends of the PLC are respectively and electrically connected with the control signal input ends of the first valve 5, the second valve 7 and the third valve 15.
The working principle of the constant-pressure water replenishing device provided by the embodiment is as follows:
the constant-pressure water replenishing device provided by the embodiment is applied to a closed air-conditioning water system, a system water replenishing port 11 is connected with a water replenishing port of the closed air-conditioning water system, a system pressure relief port 12 is connected with a pressure relief port of the closed air-conditioning water system, a water replenishing pipeline 4 is connected with a water replenishing water source, and a water inlet 3 is connected with a normal-pressure expansion tank of the closed air-conditioning water system;
in the operation process of the closed air-conditioning water system, when the temperature of the system rises, the pressure of the system rises, the system needs to be decompressed, redundant water flows into the rear pump header pipe 10 from a decompression opening of the system, a decompression cavity in the rear pump header pipe 10 and a part of the decompression pipeline 14 between the third valve 15 and the rear pump header pipe 10 are filled, at this time, the third valve 15 on the upper decompression pipeline 14 is controlled to be opened in a certain proportion, so that the redundant water flows into the front pump header pipe 2 from the decompression cavity through the decompression pipeline 14 and then flows into a normal pressure expansion tank in the system through the water inlet 3, and the decompression effect is achieved; after the pressure is released for a certain time according to the current proportion, if the system pressure still can not return to be stable, the opening proportion of a third valve 15 on an upper pressure release pipeline 14 is increased step by step, the pressure is released for a certain time according to the current proportion every time the proportion is increased, and then the opened third valve 15 is closed immediately to prevent the pressure from being restored again when the pressure is released excessively; if the system pressure still cannot return to be stable after the third valve 15 on the upper pressure relief pipeline 14 is fully opened for pressure relief for a certain time, the third valve 15 is kept fully opened, the third valve 15 on the lower pressure relief pipeline 14 is controlled to be opened for a certain proportion, pressure relief is continued for a certain time, and if the system pressure returns to be stable, the two third valves 15 are immediately closed; if the system pressure still does not return to be stable, the upper third valve 15 is kept to be fully opened, and the lower third valve 15 is controlled to be gradually opened in the same manner as the upper third valve 15 is opened until the system pressure returns to be stable; if the system pressure still cannot return to be stable after the two third valves 15 are completely opened, keeping the two third valves 15 completely opened, continuously releasing pressure until the system pressure returns to be stable, and immediately controlling the two third valves 15 to be closed; the two pressure relief pipelines 14 are arranged, compared with the traditional single pressure relief pipeline 14, the diameter of the pressure relief pipeline 14 can be reduced, a valve for pressure relief can be opened and closed rapidly conveniently, the pressure regulation accuracy and stability are improved, the segmented multi-stage accurate adjustment of the pressure relief pressure of a water system can be realized, the problem that the pressure relief head is over due to the fact that the pressure relief degree cannot be accurately adjusted by the single pressure relief pipeline 14, and therefore the device is further switched back and forth between the pressure relief mode and the pressure compensation mode to cause faults is solved, and the accuracy of the segmented multi-stage adjustment is higher by adopting the proportional valve;
in the operation process of the closed air-conditioning water system, when the temperature of the system is reduced, the system pressure is reduced, the system needs pressure compensation, the control water pump 8 is started at the moment, water in the normal pressure expansion tank is pumped into the pump front header pipe 2 through the water inlet 3, then the water in the pump front header pipe 2 enters the water pump 8 through the water inlet pipeline 9, then the water is pumped into a pressure compensation cavity inside the pump rear header pipe 10, a system water compensation port 11 communicated with the pressure compensation cavity on the pump rear header pipe 10 is connected with a system water compensation port of the system, the water is pumped into the system from the pressure compensation cavity through the system water compensation port 11, the system is subjected to pressure compensation, when the system pressure returns to be stable, the control water pump 8 is closed, and the water pumping is stopped.
In the running process of a water system, because pressure relief or pressure supplement is frequently required, the water level in the normal-pressure expansion tank is too high or too low, and further the pressure relief is difficult due to too high water level when the water system needs pressure relief, or the pressure supplement water flow is insufficient due to too low water level when the water system needs pressure supplement. In this embodiment, if the liquid level in the normal pressure expansion tank is set to be lower than 20%, the liquid level is considered to be too low, and at this time: and controlling the first valve 5 to be opened, introducing water in a water supplementing water source into the front main pipe 2 of the pump through a water supplementing pipeline 4, further introducing the water into the normal pressure expansion tank through a water inlet 3, supplementing water to the normal pressure expansion tank, and closing the first valve 5 when the water level in the normal pressure expansion tank rises to 50% and the water level is considered to reach a proper water level.
In this embodiment, if the liquid level of the normal pressure expansion tank is set to be higher than 70%, the liquid level is considered to be too high, and at this time: and controlling the second valve 7 to be opened, so that the water in the normal pressure expansion tank flows into the front main pipe 2 of the pump from the water inlet 3 and is further discharged through the drainage pipeline 6, the effect of reducing the water level is achieved, when the water level in the normal pressure expansion tank is reduced to 50%, the water level is considered to reach the proper water level, and the second valve 7 is closed at the moment.
All the technical features of the above embodiments can be arbitrarily combined (as long as there is no contradiction between the combinations of the technical features), and for brevity of description, all the possible combinations of the technical features in the above embodiments are not described; such non-explicitly written embodiments should be considered as being within the scope of the present description.
The present invention has been described in considerable detail by the general description and the specific examples given above. It should be noted that, without departing from the inventive concept, it is obvious that several variations and modifications can be made to the specific embodiments, which fall within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (4)
1. A constant pressure water replenishing device is characterized by comprising:
mounting a platform;
the pump front header pipe is vertically arranged, and the lower end of the pump front header pipe is installed on the installation platform; the upper end and the lower end of the pump front header pipe are both closed, and a cavity is arranged in the pump front header pipe; the pump front header pipe is provided with a water inlet which is used for being connected with a normal pressure expansion tank in a closed air-conditioning water system;
one end of the water replenishing pipeline is used for being connected with a water replenishing source, and the other end of the water replenishing pipeline is communicated with a cavity in the front main pipe of the pump; a first valve is arranged on the water replenishing pipeline;
one end of the drainage pipeline is communicated with the cavity in the front pump header pipe; a second valve is arranged on the drainage pipeline;
at least one water pump mounted on the mounting platform; the input end of the water pump is communicated with the cavity in the front pump header pipe through a water inlet pipeline;
the rear pump header pipe is vertically arranged, and the lower end of the rear pump header pipe is installed on the installation platform; the upper end and the lower end of the pump rear header pipe are both closed, a cavity is arranged in the pump rear header pipe, the cavity is divided into an upper part and a lower part, the upper part is a pressure relief cavity, the lower part is a pressure compensation cavity, and the pressure relief cavity and the pressure compensation cavity are mutually isolated; a system water replenishing port and a system pressure relief port are arranged on the pump rear main pipe, the system water replenishing port is communicated with the pressure supplementing cavity, and the system pressure relief port is communicated with the pressure relief cavity; the output end of the water pump is communicated with the pressure compensating cavity through a water outlet pipeline;
one end of each of the two pressure relief pipelines is communicated with the cavity in the front pump header pipe, and the other end of each of the two pressure relief pipelines is communicated with the pressure relief cavity; and the two pressure relief pipelines are respectively provided with a third valve.
2. The constant-pressure water replenishing device according to claim 1, wherein the two pressure relief pipelines are parallel to each other and are arranged up and down.
3. The constant pressure water replenishing device according to claim 1, wherein the first valve and the second valve are both open-close type electric valves, and the third valve is a proportional valve.
4. The constant-pressure water replenishing device according to claim 3, further comprising a control cabinet, wherein the control cabinet is mounted on the mounting platform; the control cabinet is internally provided with a PLC, the first valve, the second valve and the third valve are respectively provided with a control signal input end, and the control signal output end of the PLC is respectively electrically connected with the control signal input ends of the first valve, the second valve and the third valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221713277.5U CN217679423U (en) | 2022-07-05 | 2022-07-05 | Constant pressure water supplementing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221713277.5U CN217679423U (en) | 2022-07-05 | 2022-07-05 | Constant pressure water supplementing device |
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| Publication Number | Publication Date |
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| CN217679423U true CN217679423U (en) | 2022-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221713277.5U Active CN217679423U (en) | 2022-07-05 | 2022-07-05 | Constant pressure water supplementing device |
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| CN (1) | CN217679423U (en) |
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2022
- 2022-07-05 CN CN202221713277.5U patent/CN217679423U/en active Active
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