Water mixing pump station

Abstract

The invention provides a water mixing pump station. The water mixing pump station comprises a pipe A, a pipe B, a pipe C, a pipe D, a pipe E, a valve I, a valve II, an electric two-way valve, a circulating water pump and a water mixing controller, the pipe A can be positioned above the pipe B and can also be positioned below the pipe B; the other end of the pipe C is connected with the pipe A; the circulating water pump is connected with ports of a pipe E and a pipe D through loose joints, the pipe D is connected with one end of a pipe A, and the other end of the pipe E is connected with a pipe B; the first valve is installed on the pipe B, the second valve is installed on the side, close to the circulating water pump, of the pipe D, or the second valve is installed on the pipe E; the electric two-way valve is installed on the pipe C. The water mixing controller is connected with the electric two-way valve through an electric two-way valve control line. A three-way valve is not needed, the small-size electric two-way valve is used for adjusting the inlet amount of low-temperature cold water, and the water mixing and temperature adjusting functions are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of radiant cooling, in particular to a water mixing pump station. BACKGROUND

[0002] In the radiant cooling water system central air conditioning system in summer, including: five constant system, floor cooling, wall cooling, ceiling cooling, building temperature adjustment, etc., the building surface temperature cannot be lower than the dew point temperature, and the building surface temperature lower than the dew point temperature will produce condensation, cause indoor mildew, cause economic loss of users, and even affect the health of users. The outlet water temperature of the heat source host is usually low, generally the outlet water temperature of the host is set between 7-17 degrees, which is lower than the dew point temperature. In order to prevent the radiant cooling surface from condensing with the building surface, a water mixing pump station needs to be installed to increase the outlet water temperature and deliver it to the floor heating system and capillary network.

[0003] The existing water mixing pump station adopts the patent design of Beijing Boshuitong Technology Co., Ltd. with application number 2022210719482, and the core component is an electric three-way valve. The proportion of low-temperature cold water and floor heating return water is adjusted through the electric three-way valve to realize variable water temperature or constant water temperature control. The existing water mixing pump station has the following technical defects: 1) In spring or autumn, the water mixing pump station does not work for a long time, and the three-way valve is stuck due to copper rust, so the water mixing pump station cannot work; 2) The three-way valve is easy to be stuck, which causes the water mixing pump station to be unable to adjust the temperature, the user's home to condense, and even cause indoor decoration mildew, causing great economic loss; 3) The existing water mixing pump station has high cost; 4) The existing water mixing pump station has small main pipe diameter and small system flow, and a set of water mixing pump station can usually only meet the radiant cooling demand of a building area of 100 square meters. SUMMARY

[0004] To solve at least one of the technical problems in the above background art, the present application provides a water mixing pump station which does not use a three-way valve, but uses a small size electric two-way valve to adjust the amount of low temperature cold water, and realizes the function of water mixing temperature adjustment.

[0005] The technical problem solved by the present application adopts the following technical scheme: A kind of water mixing pump station, comprising: A pipe, B pipe, C pipe, D pipe, E pipe, valve one, valve two, electric two-way valve, circulating water pump and water mixing controller;The A pipe can be located above the B pipe, also can be located below the B pipe;The C pipe one end is connected the B pipe, other end is connected with the A pipe;The circulating water pump is connected with the E pipe and the port of D pipe by loose joint, and the D pipe is connected with one end of A pipe, the other end of E pipe is connected with B pipe;The valve one is installed on B pipe;The valve two is installed on D pipe near circulating water pump side, or valve two is installed on E pipe;The electric two-way valve is installed on C pipe, and the water mixing controller is connected with electric two-way valve by electric two-way valve control line.

[0006] Further, it further includes temperature sensor, the temperature sensor is pasted on E pipe, or is arranged on the pipeline between D pipe and floor heating water distributor, and the temperature sensor is connected with water mixing controller by temperature sensor signal line.

[0007] Further, the electric two-way valve preferably uses 0-10V variable flow electric two-way valve, and can also select on-off type electric two-way valve.

[0008] Further, the A pipe, B pipe, C pipe, D pipe and E pipe adopt PPR pipe, and PPR hot melting connection is used between each pipe.

[0009] Further, the water mixing pump station box adopts cold rail steel plate box or stainless steel box;All components are loaded into the water mixing pump station box, and the air gap in the box is filled with polyurethane foaming agent to carry out heat preservation treatment or the pipeline is heat preserved using rubber insulation cotton.

[0010] Further, when the water mixing pump station runs in summer, valve one is closed, valve two is opened, circulating water pump runs, and electric two-way valve adjusts the opening of electric two-way valve according to the signal of water mixing controller, so as to control the low-temperature cold water inflow to realize accurate temperature adjustment. Low-temperature cold water enters from main machine water supply port, enters A pipe through electric two-way valve, mixes with floor heating return water to generate mixed water flow to D pipe, part of mixed water enters floor heating and capillary network through floor heating water supply port by E pipe through circulating water pump, and the other part of mixed water returns to main machine or buffer tank through main machine return port. The opening of electric two-way valve is determined by the difference value between the mixed water temperature measured by water mixing controller through temperature sensor and the water temperature set by water mixing controller, the greater the difference value, the greater the opening of electric two-way valve, when the difference value decreases, the opening of electric two-way valve also decreases, and when the measured mixed water temperature is equal to or lower than the water temperature set by water mixing controller, water mixing controller will close electric two-way valve.

[0011] Further, when running in winter, valve one is opened, valve two is closed, electric two-way valve is closed, and circulating water pump is disabled; hot water from the main machine water inlet enters, flows out from the floor heating water inlet through valve one, and enters the floor heating or capillary network; the floor heating return water enters from the floor heating return water inlet, and returns to the main machine or buffer tank through the main machine return water inlet.

[0012] The present application has the following advantages: (1) The present application provides a water mixing pump station, which only needs to use a small size electric two-way valve to adjust the low temperature cold water inlet amount, and the probability of valve jamming is extremely low. (2) The small size electric two-way valve has low cost, and the whole water mixing pump station pipeline preferentially uses PPR pipe, and mainly uses PPR hot melting connection between pipelines, which greatly reduces the cost compared with the existing scheme. (3) The water mixing pump station of the present application has large main pipe diameter and large flow, and a single set of water mixing pump station can meet the radiant cooling demand of a building area of 300 square meters or more. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a left-right connection type schematic diagram of the water mixing pump station main pipe; Figure 2 is an up-down connection type schematic diagram of the water mixing pump station main pipe; Figure 3 is a left-right connection type component disassembly diagram of the water mixing pump station main pipe; Figure 4 is an up-down connection type component disassembly diagram of the water mixing pump station main pipe; Figure 5 is a summer water flow direction diagram of the left-right connection type water mixing pump station main pipe; the arrow in the pipe is the water flow direction.

[0014] Figure 6 is a summer water flow direction diagram of the up-down connection type water mixing pump station main pipe; the arrow in the pipe is the water flow direction.

[0015] Figure 7 is a winter water flow direction diagram of the left-right connection type water mixing pump station main pipe; the arrow in the pipe is the water flow direction.

[0016] Figure 8 is a winter water flow direction diagram of the up-down connection type water mixing pump station main pipe; the arrow in the pipe is the water flow direction.

[0017] In the figure: A pipe; 2-B pipe; 3-C pipe; 4-D pipe; 5-E pipe; 6-valve one; 7-valve two; 8-electric two-way valve; 9-circulating water pump; 10-temperature sensor; 11-water mixing controller; 12-temperature sensor signal line; 13-electric two-way valve control line; 14-water mixing pump station box; 15-main machine water inlet; 16-main machine return water inlet; 17-floor heating water inlet; 18-floor heating return water inlet.

[0018] The host water supply port 15 is connected with the host water outlet pipe or the air disc water supply pipe, and is located at the left side of the B pipe 2 of the left-right installation type water mixing pump station or below the B pipe 2 of the up-down installation type water mixing pump station.

[0019] The host water return port 16 is connected with the host water return pipe or the buffer tank water return pipe, and is located at the left side of the D pipe 4 of the left-right installation type water mixing pump station or below the D pipe 4 of the up-down installation type water mixing pump station.

[0020] The floor heating water supply port 17 is connected with the floor heating or capillary tube network water supply main pipe, and is located at the right side of the B pipe 2 of the left-right installation type water mixing pump station or above the B pipe 2 of the up-down installation type water mixing pump station.

[0021] The floor heating water return port 18 is connected with the floor heating or capillary tube network water return main pipe, and is located at the right side of the A pipe 1 of the left-right installation type water mixing pump station or above the A pipe 1 of the up-down installation type water mixing pump station. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] The present application is mainly used for building radiant cooling, such as five constant system, floor heating cooling, wall cooling, ceiling cooling and building temperature adjustment. In summer, low-temperature cooling water is transported into the floor heating pipe or capillary tube network. In order to prevent the dewing of the radiant cooling surface caused by excessively high water supply temperature, the water supply temperature needs to be increased to avoid the dewing of the radiant cooling surface. The present application mainly solves the problems of easy jamming of the existing water mixing pump station and small flow and high cost of the existing water mixing pump station.

[0024] REFERENCE Figures 1-4 The present application provides a water mixing pump station, which comprises an A pipe 1, a B pipe 2, a C pipe 3, a D pipe 4, an E pipe 5, a valve one 6, a valve two 7, an electric two-way valve 8, a circulating water pump 9 and a water mixing controller 11. The A pipe 1 can be located above or below the B pipe 2. One end of the C pipe 3 is connected with the B pipe 2, and the other end is connected with the A pipe 1. The circulating water pump 9 is connected with the ports of the E pipe 5 and the D pipe 4 through a loose joint. One end of the D pipe 4 is connected with the A pipe 1, and the other end of the E pipe 5 is connected with the B pipe 2. The valve one 6 is installed on the B pipe 2, the valve two 7 is installed on the side of the D pipe 4 close to the circulating water pump 9, or the valve two 7 is installed on the E pipe. The electric two-way valve 8 is installed on the C pipe 3, and the water mixing controller 11 is connected with the electric two-way valve 8 through an electric two-way valve control line 13.

[0025] Further optimization technical scheme, the electric two-way valve 13 preferentially uses 0-10V variable flow electric two-way valve, and the on-off type electric two-way valve can also be selected.

[0026] The application also comprises a temperature sensor 10, which is attached to the E pipe 5 or arranged at any position of the pipeline between the D pipe 4 and the floor heating water distributor, and the temperature sensor 10 is connected to the water mixing controller 11 through a temperature sensor signal line 12. The water mixing controller 11 can set a fixed water mixing temperature, or track the indoor dew point temperature to adjust the water mixing temperature.

[0027] The A pipe 1, the B pipe 2, the C pipe 3, the D pipe 4 and the E pipe 5 adopt PPR pipes, and the mutual connection between the pipes adopts PPR hot melting connection; or the A pipe 1, the B pipe 2, the C pipe 3, the D pipe 4 and the E pipe 5 adopt metal pipe fittings and are connected through welding or screw threads.

[0028] Further optimization technical scheme, the water mixing pump station box 14 adopts a cold rail steel plate box or a stainless steel box; all components are arranged in the water mixing pump station box, and the air gap in the box is filled with polyurethane foaming agent for heat preservation treatment or the pipeline is heat preserved by rubber heat insulation cotton.

[0029] Reference Figure 5 and Figure 6 When running in summer, the valve one 6 is closed, the valve two 7 is opened, the circulating water pump 9 is running, and the electric two-way valve 8 adjusts the opening degree according to the signal of the water mixing controller 11, so as to control the low-temperature cold water inflow to realize accurate temperature adjustment of the water mixing pump station; The low-temperature cold water enters from the main machine water supply port 15, enters the A pipe 1 through the electric two-way valve 8, mixes with the floor heating return water in the floor heating return port 18 to generate mixed water flow to the D pipe 4, part of the mixed water passes through the circulating water pump 9, enters the floor heating and capillary tube network through the E pipe 5 and the floor heating water supply port 17, and the other part of the mixed water returns to the main machine or the buffer tank through the main machine return water port 16; The opening degree of the electric two-way valve 8 is determined by the difference between the mixed water temperature measured by the temperature sensor 10 and the water temperature set by the water mixing controller 11, the greater the difference, the greater the opening degree of the electric two-way valve 8; when the difference decreases, the opening degree of the electric two-way valve 8 also decreases. When the measured mixed water temperature is equal to or lower than the water temperature set by the water mixing controller 11, the water mixing controller 11 will close the electric two-way valve 8.

[0030] Reference Figure 7 and Figure 8 When running in winter, the valve one 6 is opened, the valve two 7 is closed, the electric two-way valve 8 is closed, and the circulating water pump 9 is disabled. The host hot water or secondary system outlet water enters from the host water supply port 15, flows out from the floor heating water supply port 17 through the valve 6, and enters the floor heating or capillary network; the floor heating return water enters from the floor heating return water port 18 and returns to the host or buffer tank through the host return water port 16.

[0031] The water mixing pump station provided by the application only needs to adopt a small-size electric two-way valve to adjust the low-temperature cold water inflow, and the probability of valve jamming is extremely low; the small-size electric two-way valve has low cost, and the whole water mixing pump station pipeline preferentially adopts PPR pipe, and mainly adopts PPR hot melting connection between pipelines, which greatly reduces the cost compared with the existing scheme; the water mixing pump station of the application has large main pipe diameter and large flow, and a single set of water mixing pump station can meet the radiant cooling demand of a building area of more than 300 square meters. The existing water mixing pump station needs 2 to 3 sets of water mixing pump stations to meet the radiant cooling demand of a building area of 300 square meters.

[0032] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the application, and not to limit them; although the application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the application.

Claims

1. A water mixing pumping station, characterized by, Comprise: A pipe, B pipe, C pipe, D pipe, E pipe, valve one, valve two, electric two-way valve, circulating water pump and mixed water controller; the A pipe can be located above the B pipe, or below the B pipe; one end of the C pipe is connected to the B pipe, and the other end is connected to the A pipe; the circulating water pump is connected to the E pipe and the D pipe through a live joint; one end of the D pipe is connected to the A pipe, and the other end of the E pipe is connected to the B pipe; the valve one is installed on the B pipe; the valve two is installed on the D pipe near the circulating water pump, or the valve two is installed on the E pipe; the electric two-way valve is installed on the C pipe, and the mixed water controller is connected to the electric two-way valve through the electric two-way valve control line.

2. A water mixing pump station according to claim 1, characterized in that It also includes a temperature sensor, which is attached to the E pipe or placed at any position between the D pipe and the floor heating water distributor, and the temperature sensor is connected to the mixed water controller through the temperature sensor signal line.

3. A water mixing pump station according to claim 1, characterized in that The electric two-way valve adopts a 0-10V variable flow electric two-way valve, or a on-off type electric two-way valve.

4. A pumped water mixing station according to claim 1, wherein The A pipe, B pipe, C pipe, D pipe and E pipe adopt PPR pipes, and the connections between the pipes adopt PPR hot melt connections. Or the A pipe, B pipe, C pipe, D pipe and E pipe adopt metal pipe fittings, which are connected by welding and / or threading.

5. A mixed flow pump station according to claim 1, wherein, The mixed water pump station box adopts a cold-rolled steel plate box or a stainless steel box; all components are installed in the mixed water pump station box, and the voids in the box are filled with polyurethane foaming agent for insulation treatment or the pipes are insulated with rubber insulation cotton.

6. A hydromill according to claim 1, characterized in that When running in summer, the valve one is closed, the valve two is opened, the circulating water pump is running, and the electric two-way valve adjusts the opening according to the signal of the mixed water controller, so as to control the low-temperature cold water inflow to achieve precise temperature adjustment. Low-temperature cold water enters from the main machine water inlet, passes through the electric two-way valve, enters the A pipe, mixes with the floor heating return water to generate mixed water flow to the D pipe, part of the mixed water passes through the circulating water pump, enters the floor heating and capillary tube network through the E pipe and the floor heating water inlet, and the other part of the mixed water returns to the main machine or buffer tank through the main machine return water inlet. The opening of the electric two-way valve is determined by the difference between the mixed water temperature measured by the temperature sensor and the water temperature set by the mixed water controller; the larger the difference, the larger the opening of the electric two-way valve, and when the difference decreases, the opening of the electric two-way valve also decreases; when the measured mixed water temperature is equal to or lower than the water temperature set by the mixed water controller, the mixed water controller will close the electric two-way valve.

7. A pumped water mixing station according to claim 1, wherein When running in winter, the valve one is opened, the valve two is closed, the electric two-way valve is closed, and the circulating water pump is disabled; the main machine hot water enters from the main machine water inlet, passes through the valve one, enters the floor heating or capillary tube network through the floor heating water inlet; the floor heating return water enters from the floor heating return water inlet, and returns to the main machine or buffer tank through the main machine return water inlet.

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