Heat exchange equipment with circulating vacuum degassing function

Abstract

The utility model belongs to heat exchange equipment technical field especially relates to a kind of heat exchange equipment with circulating vacuum degassing function, the heat exchange equipment of the utility model exchanges heat to secondary pipe network by heat exchanger when working, and heat is supplied for heat user, in this process, solid impurities in heat exchange medium are removed by filtering degassing assembly, when needing degassing, close valve, circulating pump group continues to work, at this time, filtering degassing assembly is in negative pressure state, to accelerate the precipitation of gas, subsequently open valve, the gas in filtering degassing assembly is extruded by heat exchange medium in filtering degassing assembly, and degassing work is completed.The device of the utility model can remove solid impurities and gas in secondary pipe network heat exchange medium, to effectively avoid that metal pipeline is corroded and damaged.

Description

Technical Field

[0001] This utility model belongs to the technical field of heat exchange equipment, and in particular relates to a heat exchange equipment with a circulating vacuum degassing function. Background Technology

[0002] Heat exchange equipment, as a core industrial device for transferring heat between hot and cold fluids, is widely used in many fields such as chemical engineering, energy, food processing, and HVAC. During the operation of these heat exchange devices, gases such as carbon dioxide and oxygen are often present inside the heat exchange pipes. The presence of these gases can cause a series of problems and seriously affect the service life of the equipment.

[0003] From a chemical perspective, these gases can trigger electrochemical reactions under specific conditions. For example, oxygen in the presence of water will react with the surface of metal pipes to form oxides, while carbon dioxide dissolves in water to form carbonic acid, which will also corrode the metal. This process leads to the gradual deterioration of the pipe materials.

[0004] Therefore, a heat exchange device with a circulating vacuum degassing function is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a heat exchange device with a circulating vacuum degassing function to solve the above-mentioned problems.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] A heat exchange device with a circulating vacuum degassing function includes: a primary pipe network and a secondary pipe network, wherein the primary pipe network and the secondary pipe network are connected for heat exchange via a heat exchanger;

[0008] The secondary pipeline network includes heat users connected to the hot water outlet of the heat exchanger via a secondary water supply pipeline. The heat users are connected to the cold water inlet of the heat exchanger via a secondary return water pipeline. Valves, a filter and degassing assembly, and a circulation pump set are sequentially installed on the secondary return water pipeline. The circulation pump set is connected to the heat exchanger.

[0009] In the heat exchanger with circulating vacuum degassing function of this utility model, the filtration and degassing assembly includes a tank body, a cover body detachably connected to the top of the tank body, a one-way valve provided on the cover body, the one-way valve communicating with the inner cavity of the tank body, a water inlet pipe provided on the outer wall of the tank body, the water inlet pipe being connected to the valve, a water outlet pipe provided at the bottom of the tank body, the water outlet pipe being connected to the circulating pump group, and both the water inlet pipe and the water outlet pipe communicating with the inner cavity of the tank body.

[0010] In the heat exchanger with circulating vacuum degassing function of this utility model, the tank includes an outer shell, an inner shell coaxially arranged inside the outer shell, a gap between the inner shell and the outer shell, a vacuum is drawn in the gap, a plurality of second short columns are arranged in the gap, the plurality of second short columns are arranged in an array, the second short columns are fixed between the outer side wall of the inner shell and the inner side wall of the outer shell, a sealing ring is fixed between the top of the inner shell and the outer shell, the water inlet pipe and the water outlet pipe penetrate the inner shell and the outer shell, a plurality of filter components are arranged from top to bottom on the inner side wall of the inner shell, and the filtration fineness of the plurality of filter components gradually increases from top to bottom.

[0011] In the heat exchanger with circulating vacuum degassing function of this utility model, the filter assembly includes a fixing ring fixed to the inner side wall of the inner shell, an mounting ring overlapping the top surface of the fixing ring, a filter screen fixed to the top surface of the mounting ring, and a gasket between the mounting ring and the fixing ring.

[0012] In the heat exchanger with circulating vacuum degassing function of this utility model, the cover body includes a top cover, a cavity is opened in the top cover, a plurality of first short columns are arrayed in the cavity, the first short columns are fixed in the cavity, and the one-way valve is fixed on the top cover and passes through the top cover.

[0013] In the heat exchanger with circulating vacuum degassing function of this utility model, a plurality of hooks are fixedly connected to the top surface of the top cover at equal intervals around the periphery. The hooks extend out of the outer edge of the top cover and a hanging ring is attached to the hook. The end of the hanging ring away from the hook is hinged to the middle of the handle through a second hinge seat. The top of the handle is hinged to the outer wall of the outer shell through a first hinge seat.

[0014] In the heat exchanger with circulating vacuum degassing function of this utility model, an auxiliary ring is circumferentially fixed to the concave surface of the top cover. The auxiliary ring is in sliding contact with the inner sidewall of the inner shell. A ramp is circumferentially formed at the outer edge of the auxiliary ring, and the ramp is located at the bottom end of the auxiliary ring.

[0015] In the heat exchanger with circulating vacuum degassing function of this utility model, a sealing gasket is circumferentially provided between the top cover and the sealing ring.

[0016] Compared with the prior art, the present invention has the following advantages and technical effects:

[0017] When the heat exchange equipment of this utility model is working, it exchanges heat from the primary pipeline to the secondary pipeline through the heat exchanger and supplies heat to the heat users. During this process, solid impurities in the heat exchange medium are removed by the filtration and degassing component. When degassing is required, the valve is closed and the circulating pump group continues to work. At this time, the filtration and degassing component is in a negative pressure state, thereby accelerating the gas precipitation. Then the valve is opened and the heat exchange medium entering the filtration and degassing component squeezes out the gas in the filtration and degassing component, thus completing the degassing work.

[0018] The device of this invention can remove solid impurities and gases from the heat exchange medium in the secondary pipeline network, thereby effectively preventing metal pipelines from being corroded and damaged. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the filtration and degassing component in this utility model;

[0022] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0023] Figure 4 This is a bottom view of the filter assembly in this utility model;

[0024] Among them, 1. Thermal power plant; 2. Regulating valve; 3. Heat exchanger; 4. Valve; 5. Filter and degassing assembly; 6. Circulating pump set; 7. Heat user; 5101. Top cover; 5102. One-way valve; 5103. Cavity; 5104. First short column; 5105. Auxiliary ring; 5201. Outer shell; 5202. Inner shell; 5203. Gap; 5204. Second short column; 5205. Water outlet pipe; 5206. Support leg; 5207. Water inlet pipe; 5208. Sealing gasket; 5301. Hook; 5302. Hanging ring; 5303. First hinge seat; 5304. Handle; 5305. Second hinge seat; 5401. Mounting ring; 5402. Filter screen; 5403. Fixing ring; 5404. Gasket; 5405. Support rod. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Reference Figures 1 to 4 This utility model discloses a heat exchange device with a circulating vacuum degassing function, including: a primary pipe network and a secondary pipe network, which are connected by a heat exchanger 3 for heat exchange.

[0028] The secondary pipeline network includes heat users 7 connected to the hot water outlet of heat exchanger 3 via a secondary water supply pipeline. Heat users 7 are connected to the cold water inlet of heat exchanger 3 via a secondary return water pipeline. A valve 4, a filter and degassing assembly 5, and a circulation pump set 6 are sequentially installed on the secondary return water pipeline. The circulation pump set 6 is connected to heat exchanger 3.

[0029] Temperature sensors, flow sensors, and pressure sensors are also installed on the secondary water supply pipeline, and water replenishment mechanism, temperature sensors, and pressure sensors are also installed on the secondary return water pipeline.

[0030] The primary pipeline network includes thermal power plant 1. Thermal power plant 1 is connected to the hot water inlet of heat exchanger 3 through a primary water supply pipeline. Thermal power plant 1 is connected to the cold water outlet of heat exchanger 3 through a primary return pipeline. A regulating valve 2, a temperature sensor, a flow sensor, and a pressure sensor are installed on the primary water supply pipeline. A temperature sensor and a pressure sensor are installed on the primary return pipeline.

[0031] When the heat exchange equipment of this utility model is working, it exchanges heat from the primary pipeline to the secondary pipeline through the heat exchanger and supplies heat to the heat user 7. During the return water process, the solid impurities from the heat user 7 carried in the heat exchange medium are removed by the filter degassing component 5. When degassing is required, the valve 4 is closed and the circulating pump group 6 continues to work. At this time, the filter degassing component 5 is in a negative pressure state, thereby accelerating the gas precipitation. Then, the valve 4 is opened and the heat exchange medium entering the filter degassing component 5 squeezes out the gas in the filter degassing component 5, thus completing the degassing work.

[0032] This invention utilizes a dual mechanism of filtration and vacuum degassing to effectively remove solid impurities and gases from the circulating medium in the secondary pipeline network, preventing corrosion damage to metal pipelines caused by impurity deposition or gas dissolution, and extending the system's service life.

[0033] In one alternative embodiment, the filtration and degassing assembly 5 includes a tank body with a detachable cover at the top. A one-way valve 5102 is installed on the cover and communicates with the inner cavity of the tank body. An inlet pipe 5207 is installed on the outer wall of the tank body and is connected to a valve 4. An outlet pipe 5205 is installed at the bottom of the tank body and is connected to a circulating pump group 6. Both the inlet pipe 5207 and the outlet pipe 5205 communicate with the inner cavity of the tank body.

[0034] The filtration and degassing assembly 5 consists of a tank body. The top of the tank body is sealed by a removable cover, and a one-way valve 5102 on the cover is used for gas discharge. The water inlet pipe 5207 on the outer wall of the tank body is connected to the valve 4 to receive the circulating water flow from the secondary pipeline network. The water outlet pipe 5205 at the bottom of the tank body is connected to the circulating pump group 6 to output the treated water flow. The water flow enters the inner cavity of the tank body through the water inlet pipe 5207, and after being filtered by the internal filtration assembly, it flows out from the water outlet pipe 5205.

[0035] The tank structure provides independent space for filtration and degassing; the one-way valve 5102 controls the one-way discharge of gas to prevent backflow of external air; the position design of the water inlet pipe 5207 and the water outlet pipe 5205 is coordinated with the internal structure to optimize the water flow path and improve filtration and degassing efficiency.

[0036] In one alternative embodiment, the tank includes an outer shell 5201, an inner shell 5202 coaxially disposed within the outer shell 5201, a gap 5203 between the inner shell 5202 and the outer shell 5201, a vacuum is drawn within the gap 5203, and a plurality of second short columns 5204 are disposed within the gap 5203, the plurality of second short columns 5204 are arranged in an array, the second short columns 5204 are fixed between the outer side wall of the inner shell 5202 and the inner side wall of the outer shell 5201, a sealing ring is fixed between the top ends of the inner shell 5202 and the outer shell 5201, an inlet pipe 5207 and an outlet pipe 5205 penetrate the inner shell 5202 and the outer shell 5201, and a plurality of filter components are disposed on the inner side wall of the inner shell 5202 from top to bottom, the filtration fineness of the plurality of filter components gradually increasing from top to bottom.

[0037] The tank adopts a double-layer structure. The outer shell 5201 and the inner shell 5202 are coaxially arranged. The gap 5203 is evacuated to reduce heat loss and help maintain the internal negative pressure. The second short columns 5204 are arrayed in the gap 5203 and fixed to the inner and outer shells to enhance structural stability. The top of the inner shell 5202 and the outer shell 5201 are sealed by a sealing ring. The water inlet pipe 5207 and the water outlet pipe 5205 pass through the inner and outer shells and are connected to the inner cavity of the inner shell 5202. The inner wall of the inner shell 5202 is equipped with a multi-stage filtration assembly to filter the water in stages.

[0038] Multiple legs 5206 are fixedly connected to the bottom end of the outer casing 5201 at equal intervals in the circumferential direction, and all the legs 5206 are vertically arranged.

[0039] The gap 5203 reduces heat loss from the tank; the second short column 5204 enhances the connection strength between the inner and outer shells, preventing deformation due to pressure changes; the sealing ring ensures the overall sealing of the tank and prevents media leakage; the multi-stage filter assembly, through gradually increasing filtration fineness, first coarse filtration and then fine filtration, efficiently intercepts solid impurities of different particle sizes, extending the replacement cycle of the filter assembly.

[0040] In one alternative embodiment, the filter assembly includes a retaining ring 5403 fixed to the inner wall of the inner housing 5202, an mounting ring 5401 overlapping the top surface of the retaining ring 5403, a filter screen 5402 fixed to the top surface of the mounting ring 5401, and a gasket 5404 provided between the mounting ring 5401 and the retaining ring 5403.

[0041] The filter assembly consists of a fixed ring 5403, a mounting ring 5401, and a filter screen 5402. The fixed ring 5403 is fixed to the inner wall of the inner housing 5202. The mounting ring 5401 overlaps the top surface of the fixed ring 5403. The filter screen 5402 is fixed to the top surface of the mounting ring 5401. The mounting ring 5401 and the fixed ring 5403 are sealed by a gasket 5404. When water flows through the filter screen 5402, solid impurities are intercepted on the surface of the filter screen 5402, and clean water flows through.

[0042] The filter screen 5402 directly intercepts solid impurities to achieve the filtration function; the overlapping structure of the fixing ring 5403 and the mounting ring 5401 facilitates the disassembly and replacement of the filter screen; the gasket 5404 fills the installation gap to prevent unfiltered water from flowing around the filter screen through the gap, thus ensuring the filtration effect.

[0043] In addition, multiple support rods 5405 are fixed to the inner edge of the mounting ring 5401 to support the filter screen 5402.

[0044] In one alternative embodiment, the cover includes a top cover 5101, a cavity 5103 is provided inside the top cover 5101, a plurality of first short posts 5104 are arranged in an array inside the cavity 5103, the first short posts 5104 are fixedly connected inside the cavity 5103, and a one-way valve 5102 is fixedly connected to the top cover 5101 and penetrates the top cover 5101.

[0045] The cover is a top cover 5101, which has a cavity 5103 inside. The cavity 5103 has a first short column 5104 arranged in an array. A one-way valve 5102 passes through the top cover 5101 and communicates with the inner cavity of the tank to discharge internal gas. The top cover 5101 is detachably and sealed to the tank for easy internal maintenance.

[0046] The one-way valve 5102 ensures that only gas can be discharged, preventing external air from entering and affecting the degassing effect; the removable cover design facilitates the maintenance of internal components.

[0047] The one-way valve 5102 includes a pipe body, a limit ring fixedly connected to the circumference of the pipe body, a float block vertically slidably connected to the pipe body, a gap between the float block and the pipe body, the float block being located below the limit ring, and a one-way flow structure provided at the top of the pipe body. When the float block floats up under the action of liquid and abuts against the limit ring, the float block and the limit ring cooperate to seal the pipe body.

[0048] The heat exchange medium flows normally. The one-way flow structure of the check valve 5102 prevents external gas from entering the tank. During degassing, the tank is under negative pressure. The check valve 5102 prevents external gas from entering the tank. After degassing is completed, liquid enters the tank and squeezes out the gas. When the liquid flow rate is fast, the heat exchange medium in the tank overflows. The heat exchange medium causes the float to float and abut against the limit ring. At this time, the float and the limit ring cooperate to seal the pipe and prevent liquid from overflowing.

[0049] In one alternative embodiment, a plurality of hooks 5301 are fixedly connected to the top surface of the top cover 5101 at equal intervals around the circumference. The hooks 5301 extend out of the outer edge of the top cover 5101, and a hanging ring 5302 is attached to the hook 5301. The end of the hanging ring 5302 away from the hook 5301 is hinged to the middle of the handle 5304 through a second hinge seat 5305. The top of the handle 5304 is hinged to the outer wall of the outer shell 5201 through a first hinge seat 5303.

[0050] Multiple hooks 5301 are arranged circumferentially on the top surface of the top cover 5101. The hooks 5301 are hooked to the hanging rings 5302 hinged to the second hinge seat 5305. The other end of the hanging rings 5302 is connected to the handle 5304. The top of the handle 5304 is hinged to the outer wall of the outer shell 5201 through the first hinge seat 5303. By flipping the handle 5304, the hanging rings 5302 can be disengaged from the hooks 5301, and the top cover 5101 can be opened.

[0051] The hook 5301 and the hanging ring 5302 work together to achieve a detachable connection of the top cover 5101, which is simple in structure and easy to operate.

[0052] In one alternative, an auxiliary ring 5105 is circumferentially fixed to the concave surface of the top cover 5101. The auxiliary ring 5105 is in sliding contact with the inner wall of the inner shell 5202. A ramp is circumferentially formed at the outer edge of the auxiliary ring 5105, and the ramp is located at the bottom end of the auxiliary ring 5105.

[0053] When the top cover 5101 is closed, the auxiliary ring 5105 slides down the inner wall of the inner shell 5202. The ramp design reduces contact friction, and the auxiliary ring 5105 eventually fits tightly against the inner shell 5202. The auxiliary ring 5105 enhances the contact sealing between the top cover 5101 and the inner shell 5202, preventing the medium from leaking from the gap between the top cover 5101 and the tank body. The ramp design at the bottom of the auxiliary ring 5105 reduces frictional resistance when closing, extending the service life of the top cover 5101 and the tank body.

[0054] In one alternative embodiment, a sealing gasket 5208 is circumferentially disposed between the top cover 5101 and the sealing ring. The sealing gasket 5208 fills the mating gap between the top cover 5101 and the sealing ring, preventing the medium inside the tank from leaking from the connection between the top cover and the shell, and ensuring the vacuum environment inside the tank and the sealing of the medium.

[0055] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0056] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A heat exchange device with a circulating vacuum degassing function, characterized in that, include: The primary pipeline and the secondary pipeline are connected by heat exchanger (3) for heat exchange. The secondary pipeline network includes heat users (7) connected to the hot water outlet of the heat exchanger (3) via a secondary water supply pipeline. The heat users (7) are connected to the cold water inlet of the heat exchanger (3) via a secondary return water pipeline. A valve (4), a filter and degassing assembly (5), and a circulation pump group (6) are sequentially arranged on the secondary return water pipeline. The circulation pump group (6) is connected to the heat exchanger (3).

2. The heat exchanger with circulating vacuum degassing function according to claim 1, characterized in that: The filter and degassing assembly (5) includes a tank body, a cover body is detachably connected to the top of the tank body, a one-way valve (5102) is provided on the cover body, the one-way valve (5102) is connected to the inner cavity of the tank body, an inlet pipe (5207) is provided on the outer wall of the tank body, the inlet pipe (5207) is connected to the valve (4), an outlet pipe (5205) is provided at the bottom of the tank body, the outlet pipe (5205) is connected to the circulating pump group (6), and both the inlet pipe (5207) and the outlet pipe (5205) are connected to the inner cavity of the tank body.

3. A heat exchanger with circulating vacuum degassing function according to claim 2, characterized in that: The tank body includes an outer shell (5201), and an inner shell (5202) is coaxially disposed inside the outer shell (5201). A gap (5203) is left between the inner shell (5202) and the outer shell (5201). A vacuum is drawn in the gap (5203). A plurality of second short columns (5204) are disposed in the gap (5203). The plurality of second short columns (5204) are arranged in an array. The second short columns (5204) are fixed to the inner shell (5201). A sealing ring is fixed between the outer side wall of the inner shell (5202) and the inner side wall of the outer shell (5201), and between the top end of the inner shell (5202) and the outer shell (5201). The water inlet pipe (5207) and the water outlet pipe (5205) pass through the inner shell (5202) and the outer shell (5201). Multiple filter components are arranged on the inner side wall of the inner shell (5202) from top to bottom, and the filtration fineness of the multiple filter components gradually increases from top to bottom.

4. A heat exchanger with circulating vacuum degassing function according to claim 3, characterized in that: The filter assembly includes a fixing ring (5403) fixed to the inner wall of the inner housing (5202), an mounting ring (5401) overlapping the top surface of the fixing ring (5403), a filter screen (5402) fixed to the top surface of the mounting ring (5401), and a gasket (5404) provided between the mounting ring (5401) and the fixing ring (5403).

5. A heat exchanger with circulating vacuum degassing function according to claim 4, characterized in that: The cover includes a top cover (5101), a cavity (5103) is provided inside the top cover (5101), a plurality of first short posts (5104) are arranged in an array inside the cavity (5103), the first short posts (5104) are fixedly connected inside the cavity (5103), and a one-way valve (5102) is fixedly connected to the top cover (5101) and the one-way valve (5102) penetrates the top cover (5101).

6. A heat exchanger with circulating vacuum degassing function according to claim 5, characterized in that: The top surface of the top cover (5101) is circumferentially fixed with a plurality of hooks (5301), which extend out of the outer edge of the top cover (5101). A hanging ring (5302) is attached to the hook (5301). The end of the hanging ring (5302) away from the hook (5301) is hinged to the middle of the handle (5304) through a second hinge seat (5305). The top of the handle (5304) is hinged to the outer wall of the outer shell (5201) through a first hinge seat (5303).

7. A heat exchanger with circulating vacuum degassing function according to claim 5, characterized in that: An auxiliary ring (5105) is circumferentially fixed to the concave surface of the top cover (5101). The auxiliary ring (5105) is in sliding contact with the inner wall of the inner shell (5202). A ramp is circumferentially formed at the outer edge of the auxiliary ring (5105), and the ramp is located at the bottom end of the auxiliary ring (5105).

8. A heat exchanger with circulating vacuum degassing function according to claim 5, characterized in that: A sealing gasket (5208) is provided circumferentially between the top cover (5101) and the sealing ring.

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