Temperature calibration loop structure of hemodialysis device detector calibration device

Abstract

The utility model discloses a hemodialysis device detector calibration device temperature calibration loop structure which comprises a bearing module, a liquid containing unit, a circulation unit, a temperature control unit and a control module, the bearing module comprises a bottom plate, partition plates and a plurality of connecting beams, the connecting beams are arranged on the bottom plate, the partition plates are arranged between the connecting beams, and the partition plates and the bottom plate are arranged at intervals; the circulation unit and the liquid containing unit are arranged on the partition plate, the temperature control unit is arranged below the circulation unit and located on the bottom plate, the liquid containing unit, the circulation unit and the temperature control unit are connected through pipelines, and the control module is connected with the liquid containing unit, the temperature control unit and the circulation unit. Start and stop of each unit are controlled by the control module to carry out temperature regulation and liquid circulation, so that the temperature can be quickly regulated to a plurality of preset detection values and is kept constant, the liquid temperature can be accurately controlled, and the accuracy and the reliability of a detection calibration result of an external sensor or a hemodialysis device to be detected are ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of instrument detection and calibration, and in particular relates to a temperature calibration circuit structure of a detector calibration device of a hemodialysis device. Background Art

[0002] The hemodialysis device detector calibration device can effectively calibrate and trace the flow, pressure, temperature, conductivity, and pH parameters of the hemodialysis device detector. It can calibrate various models of hemodialysis device detectors produced by different manufacturers, meeting the measurement value transfer requirements of the national metrology verification system and the requirements for the establishment of public measurement standards. The calibration device includes: a flow parameter calibration module, a pressure parameter calibration module, a temperature parameter calibration module, a conductivity parameter calibration module, a pH parameter calibration module, and a control module. The calibration module calibrates the flow, pressure, temperature, conductivity, and pH value of the hemodialysis device detector. The control module, consisting of a controller and control software, performs process control and data processing.

[0003] Currently, hemodialysis devices in hospitals are calibrated using hemodialysis device detectors, typically annually. The overall traceability system is incomplete, presenting an indirect safety hazard for hemodialysis devices. Ensuring the accuracy of flow, pressure, temperature, conductivity, and pH values ​​measured by hemodialysis device detectors is crucial for safe and reliable patient treatment. Existing calibration equipment is bulky and requires manual intervention during temperature calibration, making the process cumbersome and lacking in intelligence, making it difficult to maintain accurate calibration. Utility Model Content

[0004] The purpose of the utility model is to provide a temperature calibration loop structure for a detector calibration device of a hemodialysis device, in which a liquid holding unit, a circulation unit and a temperature control unit that are interconnected are arranged in a carrier module, and the start and stop of the liquid holding unit, the circulation unit and the temperature control unit are controlled by the control module to perform temperature regulation and liquid circulation, so that the temperature can be quickly adjusted to multiple predetermined detection values ​​and kept constant, thereby being able to accurately control the liquid temperature and ensure the accuracy and reliability of the detection and calibration results of the external sensor to be detected or the hemodialysis device.

[0005] The utility model is achieved through the following technical solutions:

[0006] A temperature calibration loop structure for a detector calibration device of a hemodialysis device comprises a carrying module, a liquid holding unit, a circulation unit, a temperature control unit and a control module, wherein the liquid holding unit, the circulation unit and the temperature control unit are all arranged in the carrying module; the carrying module comprises a bottom plate, a partition and a plurality of connecting beams, wherein the connecting beams are arranged on the bottom plate, and the partition is arranged between the connecting beams and spaced apart from the bottom plate; the circulation unit and the liquid holding unit are arranged on the partition, and the temperature control unit is arranged below the circulation unit and located on the bottom plate, the liquid holding unit, the circulation unit and the temperature control unit are connected by pipelines, and the control module is respectively connected to the liquid holding unit, the temperature control unit and the circulation unit.

[0007] Furthermore, the liquid holding unit includes a liquid holding container and a temperature sensor, the temperature sensor is arranged in the liquid holding container, the temperature sensor is connected to the control module, and the liquid holding container is connected to the circulation unit and the temperature control unit.

[0008] Furthermore, a support is provided under the liquid container, a mounting hole is provided on the support, the liquid container is arranged on the mounting hole and spaced apart from the partition, and the pipeline between the liquid container and the circulation unit extends from the bottom of the liquid container to the circulation unit.

[0009] Furthermore, a liquid level switch is provided on one side of the liquid container, and the liquid level switch is connected to the control module.

[0010] Furthermore, the circulation unit includes a pump and multiple solenoid valves, the pump is connected to the liquid container and the temperature control unit respectively, solenoid valves are arranged between the pump, the liquid container and the temperature control unit, and the pump and solenoid valves are connected to the control module.

[0011] Furthermore, the temperature control unit includes a first refrigeration fin and a second refrigeration fin, the first refrigeration fin and the second refrigeration fin are connected, the first refrigeration fin is connected to a pump, the second refrigeration fin is connected to a liquid container, and an electromagnetic valve is provided between the second refrigeration fin and the liquid container.

[0012] Furthermore, the control module includes an industrial computer and a controller, the industrial computer and the controller are connected, and the controller is connected to the temperature control unit, the circulation unit and the liquid holding unit respectively.

[0013] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0014] 1) In the present invention, a liquid holding unit, a circulation unit, and a temperature control unit are interconnected and provided in the carrier module. The control module controls the start and stop of the liquid holding unit, the circulation unit, and the temperature control unit to perform temperature regulation and liquid circulation, so that the temperature can be quickly adjusted to multiple predetermined detection values ​​and kept constant, thereby accurately controlling the liquid temperature and ensuring the accuracy and reliability of the detection and calibration results of the external sensor or hemodialysis device to be detected.

[0015] 2) In the present invention, the temperature control unit includes a first refrigeration plate and a second refrigeration plate. The first refrigeration plate and the second refrigeration plate can cool and heat at the same time, or one can cool and the other can heat, alternating between cooling and heating. When the cooling power and the heating power are balanced, the liquid temperature remains constant, the temperature control effect is good, the structural principle is simple, and the production cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the structure of the temperature calibration circuit of the hemodialysis device detector calibration device.

[0018] Figure 2 This is a structural schematic diagram from another perspective of the temperature calibration circuit of the hemodialysis device detector calibration device.

[0019] Among them: 1-bottom plate, 2-connecting beam, 3-partition plate, 4-liquid container, 41-support member, 42-liquid level switch, 5-pump, 6-solenoid valve, 7-first cooling fin, 8-second cooling fin, 9-housing, 91-sliding cover. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0021] Example 1:

[0022] A temperature calibration circuit structure of a hemodialysis device detector calibration device, such as Figure 1 and Figure 2As shown, it includes a carrying module, a liquid holding unit, a circulation unit, a temperature control unit and a control module, and the liquid holding unit, the circulation unit and the temperature control unit are all arranged in the carrying module; the carrying module includes a base plate 1, a partition 3 and four connecting beams 2, the connecting beams 2 are arranged at the four corners of the base plate 1 and are fixedly connected to the base plate 1, the partition 3 is arranged between the four connecting beams 2 and is spaced apart from the base plate 1, a shell 9 is arranged on the outside of the base plate 1, and a sliding cover 91 that can be slid open is arranged on the top of the shell 9; the circulation unit and the liquid holding unit are both arranged on the partition 3, the temperature control unit is arranged below the circulation unit and located on the base plate 1, the liquid holding unit, the circulation unit and the temperature control unit are connected by pipelines, the control module includes an industrial computer and a controller, the industrial computer and the controller are connected, and the controller is respectively connected to the temperature control unit, the circulation unit and the liquid holding unit; the liquid holding unit includes a liquid container 4 and a temperature sensor The temperature sensor is arranged in the liquid container 4, which can monitor the liquid temperature in the liquid container 4 in real time. The liquid container 4 is opened above the shell 9. The opening of the liquid container 4 can be exposed by sliding the slide cover 91. The temperature sensor is electrically connected to the control module, and the liquid container 4 is connected to the circulation unit and the temperature control unit respectively; a support member 41 is provided under the liquid container 4, and both ends of the support member 41 are fixed on the partition 3 by screws. A mounting hole is provided in the middle of the support member 41. The liquid container 4 is provided on the mounting hole and is spaced apart from the partition 3. The pipeline between the liquid container 4 and the circulation unit extends from the bottom of the liquid container 4 and is connected to the circulation unit; a liquid level switch 42 is provided on one side of the liquid container 4, and the liquid level switch 42 is connected to the control module. The control module controls the liquid volume in the liquid container 4 through the liquid level switch 42 to prevent excessive liquid from flowing out of the top opening.

[0023] Example 2:

[0024] Based on the above embodiments, this embodiment further defines a circulation unit, which includes a pump 5 and multiple solenoid valves 6. The pump 5 is arranged on the partition 3. The pump 5 is connected to the liquid container 4 and the temperature control unit respectively. Solenoid valves 6 are arranged between the pump 5, the liquid container 4 and the temperature control unit. The pump 5 and the solenoid valves 6 are both connected to the controller of the control module. A calibration program is provided in the industrial computer. The industrial computer sends a start or stop instruction of the pump 5 to the controller. The industrial computer sends instructions to the pump 5 and the corresponding solenoid valve 6 based on the liquid level and liquid temperature in the liquid container 4. The pump 5 can draw the liquid in the liquid container 4 into the temperature control unit, so that the temperature control unit adjusts the liquid and then draws it into the liquid container 4. The multiple solenoid valves 6 play a role in preventing backflow and guiding the liquid, so that the liquid flows out from the bottom of the liquid container 4 and is poured into the side of the liquid container 4 to realize liquid circulation.

[0025] Example 3:

[0026] On the basis of the above embodiments, the present embodiment further defines a temperature control unit, which includes a first refrigeration plate 7 and a second refrigeration plate 8. The first refrigeration plate 7 and the second refrigeration plate are connected, the first refrigeration plate 7 is connected to the pump 5, the second refrigeration plate 8 is connected to the liquid container 4, and an electromagnetic valve 6 is provided between the second refrigeration plate 8 and the liquid container 4. The first refrigeration plate 7 and the second refrigeration plate 8 regulate the temperature of the liquid pumped in by the pump 5. The temperature regulation includes three modes, namely, single cooling mode: the first refrigeration plate 7 and the second refrigeration plate 8 cool at the same time to quickly reduce the temperature of the liquid. When the cooling power of the first refrigeration plate 7 and the second refrigeration plate 8 reaches a balance with the heating power of the environment to the liquid, the temperature of the liquid remains stable; single heating mode: the first refrigeration plate 7 and the second refrigeration plate 8 heat at the same time to quickly increase the temperature of the liquid. The heating power of the first refrigeration plate 7 and the second refrigeration plate 8 is balanced with the heating power of the liquid to the environment. When the heat dissipation power reaches a balance, the liquid temperature is stable; in the hot and cold alternating mode, one refrigeration plate is responsible for cooling, and the other refrigeration plate is responsible for heating. The cooling and heating work alternately. When the cooling power and the heating power are balanced, the liquid temperature is stable; an ambient temperature sensor is also provided on the partition 3, and the ambient temperature sensor is also electrically connected to the controller for monitoring the ambient temperature and feeding back to the industrial computer; during temperature calibration, the temperature sensor of the hemodialysis device to be tested is directly inserted into the liquid container 4, and the temperature of the liquid in the liquid container 4 is controlled. Multiple constant temperature points are selected for temperature regulation. When the water temperature in the liquid container 4 reaches one of the constant temperature points, the temperature sensor of the hemodialysis device is inserted to observe whether the temperature of the temperature sensor being tested is consistent with the temperature in the liquid container 4 or within the error range. After testing at multiple constant temperature points, it can be determined whether the temperature sensor being tested is accurate. The other parts of this embodiment are the same as the above embodiment and will not be repeated here.

[0027] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. used to indicate the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0028] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this invention does not necessarily mean that the components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that the direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0029] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention falls within the scope of protection of the present invention.

Claims

1. A temperature calibration circuit structure of a hemodialysis device detector calibration device, characterized in that: It includes a carrying module, a liquid holding unit, a circulation unit, a temperature control unit and a control module, wherein the liquid holding unit, the circulation unit and the temperature control unit are all arranged in the carrying module; the carrying module includes a bottom plate, a partition and multiple connecting beams, the connecting beams are arranged on the bottom plate, and the partition is arranged between the connecting beams and spaced apart from the bottom plate; the circulation unit and the liquid holding unit are arranged on the partition, and the temperature control unit is arranged below the circulation unit and located on the bottom plate, the liquid holding unit, the circulation unit and the temperature control unit are connected by pipelines, and the control module is respectively connected to the liquid holding unit, the temperature control unit and the circulation unit.

2. The temperature calibration circuit structure of the hemodialysis device detector calibration device according to claim 1, characterized in that: The liquid holding unit includes a liquid holding container and a temperature sensor. The temperature sensor is arranged in the liquid holding container and is connected to the control module. The liquid holding container is connected to the circulation unit and the temperature control unit.

3. The temperature calibration circuit structure of the hemodialysis device detector calibration device according to claim 2, characterized in that: A support is provided below the liquid container, and a mounting hole is provided on the support. The liquid container is arranged on the mounting hole and spaced apart from the partition. The pipeline between the liquid container and the circulation unit extends from the bottom of the liquid container to the circulation unit.

4. The temperature calibration circuit structure of the hemodialysis device detector calibration device according to claim 2, characterized in that: A liquid level switch is provided on one side of the liquid container, and the liquid level switch is connected to the control module.

5. The temperature calibration circuit structure of the hemodialysis device detector calibration device according to claim 2, characterized in that: The circulation unit includes a pump and multiple solenoid valves. The pump is connected to the liquid container and the temperature control unit respectively. Solenoid valves are provided between the pump, the liquid container and the temperature control unit. The pump and the solenoid valves are connected to the control module.

6. The temperature calibration circuit structure of the hemodialysis device detector calibration device according to claim 5, characterized in that: The temperature control unit includes a first refrigeration fin and a second refrigeration fin, the first refrigeration fin and the second refrigeration fin are connected, the first refrigeration fin is connected to a pump, the second refrigeration fin is connected to a liquid container, and an electromagnetic valve is provided between the second refrigeration fin and the liquid container.

7. The temperature calibration circuit structure of the hemodialysis device detector calibration device according to claim 6, characterized in that: The control module includes an industrial computer and a controller. The industrial computer is connected to the controller, and the controller is connected to the temperature control unit, the circulation unit and the liquid holding unit respectively.

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