Heat preservation and heating device for water for injection

Abstract

The utility model provides a heat preservation and heating device for injection water, which comprises a circulating water supply main pipe connected with a water inlet and a water outlet of an injection water heating storage tank, and is characterized in that the input end and the output end of the circulating water supply main pipe are connected with a plurality of water supply branch pipes provided with water inlets and water outlets, and each water supply branch pipe is sleeved with an insulating flame-retardant sleeve; and an electromagnetic heating coil is wound on the insulating flame-retardant sleeve and is connected with the control cabinet. Under normal conditions, high-temperature water in the injection water heating storage tank is supplied to a water using end through the circulating water supply main pipe and the water supply branch pipe, then low-temperature water is sent back to the injection water heating storage tank to be heated, and injection water circulation is maintained; when a heating device of the injection water heating storage tank breaks down and needs to be maintained or replaced, the injection water in the water supply branch pipes is heated and subjected to heat preservation by starting the electromagnetic heating coils and the controllers on the water supply branch pipes, so that high-temperature injection water circulating supply without stopping production and stopping is achieved, and the service life of the injection water is prolonged. And the injection water in each water supply branch pipe is prevented from being polluted due to low temperature.

Description

Technical Field

[0001] The utility model relates to a heat preservation and heating device, in particular to a heat preservation and heating device for injection water, belonging to the technical field of medical devices. Background Art

[0002] Water for injection (WFI) is pyrogen-free, sterile, and endotoxin-free. It is primarily used in the biopharmaceutical industry for equipment cleaning, stock solution preparation, and culture medium preparation. WFI circulation and distribution systems typically require 24-hour uninterrupted delivery to various points of use. The circulating WFI temperature must be maintained above 70°C to comply with Article 99 of the Pharmaceutical Good Manufacturing Practice (2010 revision): "The preparation, storage, and distribution of purified water and WFI shall be protected against microbial growth. Purified water may be circulated, and WFI may be maintained above 70°C." The system maintains WFI above 70°C through a return water heating device, effectively controlling microbial growth. The WFI return water heating system consists of a return water heat exchanger and an electric pipeline heater. The electric heater ensures that even if the return water heat exchanger stops operating due to a lack of steam supply, the WFI temperature remains stable above 70°C. Currently, many biotechnology companies are using electric heaters for their WFI return lines that are more than 10 years old. The heating elements within these heaters are gradually experiencing power degradation. When the return water main heat exchanger stops functioning due to a lack of industrial steam, the heaters are no longer able to maintain a stable temperature above 70°C in the WFI storage and distribution system. This water shortage is particularly acute during weekends and holidays, increasing the risk of WFI quality degradation. Existing electric heaters are integrated into the WFI pipelines, often requiring downtime for installation and maintenance. Furthermore, replacement or repairs require verification and water quality testing, further increasing the risk of WFI contamination. Therefore, improvements to existing technologies are necessary. Summary of the Invention

[0003] In order to solve the problem that when a heating device used in an existing injection water circulation system fails, the system needs to be shut down for maintenance and replacement, which easily contaminates the injection water, the utility model provides an injection water insulation heating device.

[0004] The utility model is completed through the following technical solutions: an injection water insulation and heating device, including a circulating water supply main pipe connected to the water inlet and outlet of the injection water heating storage tank, characterized in that the input and output ends of the circulating water supply main pipe are connected to a plurality of water supply branches with water inlets and outlets thereon, each water supply branch pipe is provided with an insulating flame retardant sleeve, and an electromagnetic heating coil is wound around the insulating flame retardant sleeve, and the electromagnetic heating coil is connected to the control cabinet, so that under normal circumstances, the high-temperature water of the injection water heating storage tank is supplied to the water supply end through the circulating water supply main pipe and the water supply branch pipe, and the low-temperature water is returned to the injection water heating storage tank for heating to maintain the injection water circulation; and when the heating device of the injection water heating storage tank fails and needs to be repaired or replaced, the injection water in the water supply branch pipe is heated and kept warm by starting the electromagnetic heating coils and controllers on each water supply branch pipe, so as to realize the circulation supply of high-temperature injection water without stopping production and the injection water in each water supply branch pipe is prevented from being contaminated by low temperature.

[0005] The water inlet and outlet of the water supply branch pipe are respectively connected to the water outlet pipe and the return pipe with valves thereon. The water outlet pipe is arranged on the water supply branch pipe close to the electromagnetic heating coil, and the return pipe is arranged on the water supply branch pipe close to the injection water heating storage tank, so as to form a branch circulation water supply channel between the water supply branch pipe and the circulating water supply main pipe and the injection water heating storage tank.

[0006] The insulating flame retardant sleeve is configured as a cylindrical sleeve with open ends, which is mounted on the corresponding water supply branch pipe. The length of the insulating flame retardant sleeve is specifically set according to the winding length of the electromagnetic heating coil, so as to ensure the safety of water used during heating by the electromagnetic heating coil through the insulating flame retardant sleeve.

[0007] The electromagnetic heating coil is wound from top to bottom on the outer wall of the insulating flame retardant sleeve, and the winding length is set according to the heating and insulation needs, so that the injection water in the water supply branch pipe is heated by electromagnetic heating and then supplied to the water use end, and then the return water from the water use end is returned to the injection water storage tank through the circulating water supply main pipe, thereby realizing branch circulation water supply.

[0008] The control cabinet is provided with an operation control unit, and the control cabinet is provided with a temperature control unit and a frequency conversion control unit electrically connected to the operation control unit. The temperature control unit is electrically connected to the frequency conversion control unit, and the electromagnetic heating coil is electrically connected to the frequency conversion control unit, so that the heating power and heating temperature of the electromagnetic heating coil can be controlled through the control cabinet, thereby ensuring that the water for injection meets the insulation cycle requirement of 70°C.

[0009] The utility model has the following advantages and effects:

[0010] 1. The heat preservation and heating device is wrapped around the outer wall of the water for injection pipeline and has no contact with the water for injection, thus reducing the risk of water for injection contamination;

[0011] 2. The device does not need to be shut down for the circulation system when it is installed, and does not affect the normal operation of the injection water distribution circulation system. It can be powered on after installation, and there is no need to verify the circulation system and test the water quality.

[0012] 3. When the device fails, it can be repaired by turning off the power source, and it is easy to disassemble and assemble;

[0013] 4. The coil power of the electromagnetic induction heating device is not easy to attenuate and has a long service life;

[0014] 5. The device has low modification cost and can work continuously for a long time without industrial steam supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 It is a structural diagram of the utility model. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0019] The injection water insulation and heating device provided by the utility model comprises a circulating water supply main pipe 9 connected to the water inlet and outlet of the injection water heating storage tank 8, wherein: the input and output ends of the circulating water supply main pipe 9 are connected to a plurality of water supply branch pipes 1 with water inlets and outlets thereon, each water supply branch pipe 1 is provided with an insulating flame retardant sleeve 2, and an electromagnetic heating coil 3 is wound around the insulating flame retardant sleeve 2, and the electromagnetic heating coil 3 is connected to the control cabinet 7, so that under normal circumstances, the high-temperature water of the injection water heating storage tank 8 is supplied to the water supply end through the circulating water supply main pipe 9 and the water supply branch pipe 1, and the low-temperature water is returned to the injection water heating storage tank 8 for heating, so as to maintain the injection water circulation; and when the heating device of the injection water heating storage tank 8 fails and needs to be repaired or replaced, the injection water in the water supply branch pipe 1 is heated and kept warm by starting the electromagnetic heating coil 3 and the controller on each water supply branch pipe 1, so as to realize the circulation supply of high-temperature injection water without stopping production and the injection water in each water supply branch pipe 1 is prevented from being contaminated by the low temperature;

[0020] The water inlet and outlet of the water supply branch pipe 1 are respectively connected to the water outlet pipe and the water return pipe with valves 11 thereon. The water outlet pipe is arranged on the water supply branch pipe 1 close to the electromagnetic heating coil 3, and the water return pipe is arranged on the water supply branch pipe 1 close to the injection water heating storage tank 8, so as to form a branch circulation water supply channel between the water supply branch pipe 1 and the circulating water supply main pipe 9 and the injection water heating storage tank 8;

[0021] The insulating flame-retardant sleeve 2 is configured as a cylindrical sleeve with open ends. The cylindrical sleeve is mounted on the corresponding water supply branch pipe 1. The length of the insulating flame-retardant sleeve 2 is specifically set according to the winding length of the electromagnetic heating coil 3, so as to ensure the safety of water used during heating by the electromagnetic heating coil 3 through the insulating flame-retardant sleeve 2.

[0022] The electromagnetic heating coil 3 is wound from top to bottom on the outer wall of the insulating flame retardant sleeve 2. The winding length is set according to the heating and heat preservation requirements, so that the injection water in the water supply branch pipe 1 is heated by electromagnetic heating and then supplied to the water end. Then, the return water from the water end is returned to the injection water storage tank 8 through the circulating water supply main pipe 9, thereby realizing branch circulation water supply.

[0023] An operation control unit 6 is provided on the control cabinet 7. A temperature control unit 5 and a frequency conversion control unit 4 electrically connected to the operation control unit 6 are provided in the control cabinet 7. The temperature control unit 5 is electrically connected to the frequency conversion control unit 4, and the electromagnetic heating coil 3 is electrically connected to the frequency conversion control unit 4, so that the heating power and heating temperature of the electromagnetic heating coil 3 can be controlled by the temperature control unit 5 and the frequency conversion control unit 4 in the control cabinet 7, thereby ensuring that the water for injection meets the insulation cycle requirement of 70°C.

[0024] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0025] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A water for injection heat preservation and heating device, comprising a circulating water supply main pipe connected to the water inlet and outlet of the injection water heating storage tank, characterized in that The input and output ends of the circulating water supply main are connected to several water supply branches with water inlets and outlets. Each water supply branch is provided with an insulating flame retardant sleeve, and an electromagnetic heating coil is wound around the insulating flame retardant sleeve. The electromagnetic heating coil is connected to the control cabinet.

2. The device for heat preservation and heating of water for injection according to claim 1, characterized in that The water inlet and outlet of the water supply branch pipe are respectively connected to the outlet pipe and return pipe with valves thereon. The outlet pipe is arranged on the water supply branch pipe close to the electromagnetic heating coil, and the return pipe is arranged on the water supply branch pipe close to the injection water heating tank.

3. The device for heat preservation and heating of water for injection according to claim 1, characterized in that The insulating flame retardant sleeve is configured as a cylindrical sleeve with open ends. The cylindrical sleeve is mounted on the corresponding water supply branch pipe. The length of the insulating flame retardant sleeve is specifically configured according to the winding length of the electromagnetic heating coil.

4. The device for heat preservation and heating of water for injection according to claim 1, characterized in that The electromagnetic heating coil is wound from top to bottom on the outer wall of the insulating flame-retardant sleeve, and the winding length is set according to heating and heat preservation requirements.

5. The device for heat preservation and heating of water for injection according to claim 1, characterized in that The control cabinet is provided with an operation control unit, and the control cabinet is provided with a temperature control unit and a frequency conversion control unit electrically connected to the operation control unit. The temperature control unit is electrically connected to the frequency conversion control unit, and the electromagnetic heating coil is electrically connected to the frequency conversion control unit.

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