A medical automatic switching control system

Abstract

This utility model relates to a medical automatic switching control system, specifically a tap water switching system for emergency cooling of medical equipment. It mainly includes a water system and a control system, comprising an emergency tap water supply pipe, a first shut-off valve, a pressurized water pump, a check valve, a second shut-off valve, an emergency tap water drain pipe, the original cooling system supply pipe, a first ball valve, a second ball valve, the medical equipment, a third ball valve, the original cooling system return pipe, a temperature sensor, a pressure switch, and an electrically operated two-way valve. The original cooling system supply pipe, pressure switch, temperature sensor, second ball valve, electrically operated two-way valve, medical equipment, electrically operated two-way valve, third ball valve, and original cooling system return pipe are sequentially connected to form the original cooling water system loop. When the original cooling system malfunctions or shuts down, the emergency tap water cooling system quickly starts, seamlessly connecting to the cooling supply and avoiding direct shutdown of the medical equipment; breaking the limitation of the original cooling system's "one failure, all shutdowns" limitation.

Description

Technical Field

[0001] This utility model relates to a medical automatic switching control system, which is mainly a tap water switching system used for emergency cooling of medical equipment. Background Technology

[0002] In practical applications of medical superconducting magnetic resonance imaging (MRI) equipment, superconductivity is a core and critical component. The superconducting magnet can only maintain its superconducting state and generate a stable and sufficiently strong magnetic field to provide high-quality medical imaging when operating at extremely low temperatures. During operation, the superconducting system continuously generates heat, requiring a cooling system to dissipate it promptly. If cooling is inadequate, the temperature rise can easily lead to superconductivity failure. Superconductivity failure not only directly causes significant economic losses or equipment damage but also forces the interruption of ongoing examinations, impacting the patient's diagnostic process. Therefore, a safe and continuous cooling system is crucial for the long-term stable operation of superconducting MRI equipment.

[0003] Superconducting magnetic resonance imaging (MRI) equipment generates a large amount of heat during operation and requires extremely high temperature stability. It typically employs water cooling, with the inlet water temperature required to be between 5 and 28°C. Due to the low temperature, chiller units are usually used to provide cooling water, as shown in patent CN218972922U: the system uses an air-cooled integrated chiller unit and related piping to directly cool the medical equipment. However, when this system malfunctions, the cooling water system cannot continuously provide cooling, thus compromising system safety. Utility Model Content The purpose of this invention is to overcome the shortcomings of existing technologies and propose an automatic switching control system for medical equipment, specifically a switching system for emergency cooling of medical devices. An emergency tap water switching system is added to the conventional cooling water system. When either the water temperature or pressure of the conventional cooling water system's supply pipe is detected to be insufficient, it is determined that the system cannot meet the cooling requirements of the medical equipment, and the system switches to emergency tap water cooling to ensure the stable operation of the medical equipment.

[0004] Technical solution: A medical automatic switching control system mainly includes a water system and a control system, characterized in that: the water system is a backup emergency tap water system set up on the basis of a conventional cooling water system.

[0005] Furthermore, the water system mainly includes: Emergency tap water supply pipe 1, first shut-off valve 2, booster pump 3, check valve 4; And the second shut-off valve 5, and the emergency tap water drain pipe 6; And the original cooling system water supply pipe 7; And the first ball valve 8, the second ball valve 9, and the third ball valve 11; And medical equipment 10, original cooling system return water pipe 12; And temperature sensor T-1, pressure switch P-1, and electrically operated two-way valves MV1, MV2, MV3, and MV4; among which: The original cooling system water supply pipe 7, pressure switch P-1, temperature sensor T-1, second ball valve 9, electric two-way switch valve MV3, medical equipment 10, electric two-way switch valve MV4, third ball valve 11, and original cooling system return water pipe 12 are connected in sequence to form the original cooling water pipeline system loop. The inlet of the first ball valve 8 is installed between the temperature sensor T-1 and the inlet of the second ball valve 9, and the outlet of the first ball valve 8 is installed on the original cooling system return water pipe 12 at the outlet of the third ball valve 11. The emergency tap water supply pipe 1, the first shut-off valve 2, the booster pump 3, the check valve 4, and the electric two-way switch valve MV1 are connected in sequence to form the water supply pipeline of the emergency tap water switching system. The electric two-way switch valve MV2, the second shut-off valve 5, and the emergency tap water drain pipe 6 are connected in sequence to form the drainage pipe of the emergency tap water switching system.

[0006] Furthermore, the control system mainly includes: a main circuit breaker 21, a pressurized water pump circuit breaker 22, an AC contactor 23, a pressurized water pump 3, and a control circuit; the control circuit includes a control circuit breaker 24, a temperature controller 25, a temperature sensor T-1, a pressure switch P-1, an intermediate relay 26, intermediate relay normally open contacts 26-1 and 26-3, intermediate relay normally closed contacts 26-2 and 26-4, a first energized time relay 29, first energized time relay normally open contacts 29-1 and 29-2, a second energized time relay 30, second energized time relay normally open contact 30-1, an AC contactor coil 23-1, and electrically operated two-way switching valves MV1, MV2, MV3, and MV4; wherein: The main circuit breaker 21 is the circuit switch for the entire control system.

[0007] The booster pump 3 is connected to three live wires in sequence via AC contactor 23 and booster pump circuit breaker 22; The control circuit is connected to the live wire and the neutral wire through the control circuit breaker 24; The temperature sensor T-1 and the pressure switch P-1 are installed on the original cooling system water supply pipe 7; The temperature controller 25 of the control circuit is connected to the temperature sensor T-1; the two power terminals 25-1 of the temperature controller 25 are connected to the neutral wire and the live wire respectively; the two signal terminals 25-2 of the temperature controller 25 are connected to the live wire and the intermediate relay 26 respectively, and the other side of the intermediate relay 26 is connected to the neutral wire.

[0008] The pressure switch P-1 and the thermostat 25 are connected in parallel and connected to the live wire and the intermediate relay 26.

[0009] The normally open contact 29-1 of the first energized time relay is connected in series with the coil 23-1 of the AC contactor, with one end connected to the live wire L1 and the other end connected to the neutral wire N.

[0010] The normally open contact 26-1 of the intermediate relay and the first energized time relay 29 are connected in series, with one end connected to the live wire L1 and the other end connected to the neutral wire N.

[0011] The normally closed contact 26-2 of the intermediate relay is connected in series with the second energized time relay 30, with one end connected to the live wire L1 and the other end connected to the neutral wire N.

[0012] The normally open contact 26-3 of the intermediate relay is connected to the g terminal of the electric two-way switching valves MV3 and MV4, and the normally open contact 30-1 of the second energized time relay is connected to the k terminal of the electric two-way switching valves MV3 and MV4. The other end of the normally open contact 26-3 of the intermediate relay and the normally open contact 30-1 of the second energized time relay are connected to the live wire L1, and the other end of the electric two-way switching valves MV3 and MV4 are connected to the neutral wire.

[0013] The normally closed contact 26-4 of the intermediate relay is connected to the g terminal of the electric two-way switching valves MV1 and MV2. The normally open contact 29-2 of the first energized time relay is connected to the k terminal of the electric two-way switching valves MV1 and MV2. The other end of the normally closed contact 26-4 of the intermediate relay and the normally open contact 29-2 of the second energized time relay are connected to the live wire L1. The other end of the electric two-way switching valves MV1 and MV2 are connected to the neutral wire. Furthermore, the control circuit also includes a pressurized water pump operation indicator light 27, which is connected in parallel with the AC contactor coil 23-1.

[0014] Furthermore, the control circuit also includes an emergency water system operation indicator light 28, which is connected in parallel with the first energized time relay 29.

[0015] Beneficial effects: When the original cooling system malfunctions, leaks in the pipes, or shuts down due to power problems, the emergency tap water cooling system can be quickly activated, seamlessly connecting the cooling supply and preventing direct shutdown of medical equipment. This breaks the limitation of the original cooling system's "one failure, all shutdowns" and improves the reliability of the cooling system from "single-point dependence" to "multiple guarantees," thereby avoiding direct economic losses to medical equipment due to cooling interruptions and preventing ongoing examinations from being interrupted, thus affecting the patient's diagnostic process. Attached Figure Description

[0016] Figure 1 Schematic diagram of the water system of this utility model; Figure 2 Control principle diagram of this utility model; Numerical markers: 2 First shut-off valve, 5 Second shut-off valve, 3 Booster pump, 4 Check valve, 1 Emergency tap water supply pipe, 6 Emergency tap water drainage pipe, 7 Original cooling system water supply pipe, 12 Original cooling system return water pipe, 10 Medical equipment, 8 First ball valve, 9 Second ball valve, 11 Third ball valve, T-1 Temperature sensor, P-1 Pressure switch, MV1, MV2, MV3 and MV4 are electric two-way switching valves; 21 Main circuit breaker, 22 Booster pump circuit breaker, 23 AC contactor, 23-1 AC contactor coil, 24 Control circuit breaker, 25 Temperature controller, 26 Intermediate relay, 26-1 and 26-3 are normally open contacts of intermediate relay 26, 26-2 and 26-4 are normally closed contacts of intermediate relay 26, 27 Booster pump operation indicator light, 28 Emergency water system operation indicator light, 29 First energized time relay, 29-1, 29-2 is the normally open contact of the first energized time relay 29, 30 is the second energized time relay, 30-1 is the normally open contact of the second energized time relay 30, T-1 is the temperature sensor, P-1 is the pressure switch, MV1, MV2, MV3 and MV4 are electric two-way switching valves, L1, L2 and L3 are the live wires, N is the neutral wire, g is the closed electric two-way switching valve, and k is the open electric two-way switching valve. Detailed Implementation

[0017] Example Superconducting magnetic resonance imaging (MRI) equipment generates a large amount of heat during operation and requires extremely high temperature stability. Water cooling is typically used, with the inlet water temperature required to be between 5 and 28°C. Due to the low temperature, chiller units are usually used to supply cold water, as shown in utility model CN218972922U: the system uses an air-cooled integrated chiller unit and related piping to directly cool the medical equipment. However, when this system malfunctions, the cooling water system cannot continuously provide cooling, compromising system safety. Therefore, this utility model adds an automatic cooling water switching control system to the existing cooling water system. Upon detecting a cooling water system malfunction, it automatically switches to tap water for emergency cooling, further ensuring the safety of the medical equipment cooling system.

[0018] This utility model consists of two parts. Figure 1 Water system schematic diagram and Figure 2 The control principle diagram is explained in detail.

[0019] like Figure 1 The water system schematic diagram is shown below: This utility model consists of an emergency tap water supply pipe 1, a first shut-off valve 2, a booster water pump 3, a check valve 4, a second shut-off valve 5, an emergency tap water drain pipe 6, an original cooling system water supply pipe 7, a first ball valve 8, a second ball valve 9, a medical device 10, a third ball valve 11, an original cooling system return water pipe 12, a temperature sensor T-1, a pressure switch P-1, and electric two-way switch valves MV1, MV2, MV3, and MV4.

[0020] The original cooling system water supply pipe 7, pressure switch P-1, temperature sensor T-1, second ball valve 9, electric two-way switch valve MV3, medical equipment 10, electric two-way switch valve MV4, third ball valve 11, and original cooling system return water pipe 12 are connected in sequence to form the original cooling water system loop. The inlet of the first ball valve 8 is installed between the inlets of temperature sensor T-1 and second ball valve 9, and the outlet of the first ball valve 8 is installed on the original cooling system return water pipe 12 at the outlet of the third ball valve 11. Emergency tap water supply pipe 1, first shut-off valve 2, and pressurized water... Pump 3, check valve 4, and electric two-way switch valve MV1 are connected in sequence to form the water supply pipeline of the emergency tap water switching system. The outlet of electric two-way switch valve MV1 is connected between the outlet of electric two-way switch valve MV3 of the original cooling water system and the inlet of medical equipment 10. Electric two-way switch valve MV2, second shut-off valve 5, and emergency tap water drain pipe 6 are connected in sequence to form the drainage pipeline of the emergency tap water switching system. The inlet of electric two-way switch valve MV2 is connected between the outlet of medical equipment 10 and the inlet of electric two-way switch valve MV4.

[0021] The second ball valve 9 and the third ball valve 11 are the maintenance manual valves for the original cooling water system circuit, and the first ball valve 8 is the bypass valve for maintenance of the original cooling water system circuit. The first shut-off valve 2 and the second shut-off valve 5 are the maintenance manual valves for the emergency tap water pipeline.

[0022] This utility model discloses a medical automatic switching control system that generally operates the original cooling water system circuit. When the measured value of temperature sensor T-1 does not meet the system temperature requirements or the pressure does not meet the system pressure requirements (i.e., pressure switch P-1 is closed), the system closes electric two-way switch valves MV3 and MV4 and opens electric two-way switch valves MV1 and MV2, and starts pressurized water pump 3. At this time, it switches to emergency cooling with tap water to ensure the safe operation of the system.

[0023] like Figure 2 The control principle diagram is shown below: The control system of this utility model consists of a main circuit breaker 21, a pressurized water pump circuit breaker 22, an AC contactor 23, an AC contactor coil 23-1, a pressurized water pump 3, a control circuit breaker 24, a temperature controller 25, an intermediate relay 26, intermediate relay normally open contacts 26-1 and 26-3, intermediate relay normally closed contacts 26-2 and 26-4, a pressurized water pump operation indicator 27, an emergency water system operation indicator 28, a first energized time relay 29, first energized time relay normally open contacts 29-1 and 29-2, a second energized time relay 30, second energized time relay normally open contact 30-1, a temperature sensor T-1, a pressure switch P-1, and electric two-way switching valves MV1, MV2, MV3, and MV4; wherein L1, L2, and L3 are live wires, N is neutral wire, g is the closed position of the electric two-way switching valve, and k is the open position of the electric two-way switching valve.

[0024] I. Under normal circumstances, the medical switching control system operates the original cooling water system. The measured value of the system temperature sensor T-1 meets the requirements, and the pressure switch P-1 is also in the non-closed normally open state. At this time, the coil of intermediate relay 26 is de-energized, the normally open contacts 26-1 and 26-3 of the intermediate relay remain normally open, and the normally closed contacts 26-2 and 26-4 of the intermediate relay remain normally closed. Because the normally open contact 26-1 of the intermediate relay is in the open state, the coil of the first energized time relay 29 is de-energized, the emergency water system operation indicator 28 is not lit, the coil of the first energized time relay 29 is de-energized, and the auxiliary contacts 29-1 and 29-2 of the first energized time relay remain open. If the auxiliary contact 29-1 of the time relay is not energized, the coil 23-1 of the AC contactor is not energized, the AC contactor 23 does not close, the pressurized water pump 3 does not run, and the pressurized water pump running indicator 27 does not light up. Since the normally closed contacts 26-2 and 26-4 of the intermediate relay are in the closed state, the coil of the second energized time relay 30 is energized, the normally open contact 30-1 of the second energized time relay closes after a delay, the k position of the electric two-way switch valves MV3 and MV4 is energized, and the g position is not energized, so the electric two-way switch valves MV3 and MV4 are in the open position; the k position of the electric two-way switch valves MV1 and MV2 is not energized, and the g position is energized, so the electric two-way switch valves MV1 and MV2 are in the closed position.

[0025] Explanation: AC contactor coil 23-1 in Figure 2 In the control circuit, the AC contactor coil 23-1 is the coil of AC contactor 23. When the coil is energized, AC contactor 23 closes. Figure 2 When the main circuit is connected, the booster pump 3 runs. When the coil is de-energized, the AC contactor 23 disconnects, and the booster pump 3 loses power. The first energized time relay 29 and the second energized time relay 30 are mainly used to switch the electric valves (MV1, MV2, MV3, MV4). The booster pump 3 needs to run during emergency tap water operation.

[0026] II. When the existing cooling water system fails to meet requirements (i.e., the temperature sensor T-1's measurement value is unsatisfactory or pressure switch P-1 is closed), the medical automatic switching control system needs to switch to emergency tap water cooling. At this time, the intermediate relay 26 coil is energized, the normally open contacts 26-1 and 26-3 are closed, and the normally closed contacts 26-2 and 26-4 are open. Because the normally open contact 26-1 is closed, the coil of the first energized time relay 29 is energized, the emergency water system operation indicator 28 illuminates, and the coil of the first energized time relay 29 is energized. The normally open contacts 29-1 and 29-2 of the first energized time relay will close after a delay, and the AC contactor... When coil 23-1 is energized, AC contactor 23 closes, and pressurized water pump 3 starts running. At this time, the pressurized water pump running indicator light 27 illuminates. Since the normally closed contacts 26-2 and 26-4 of the intermediate relay are in the open state, the coil of the second energized time relay 30 is de-energized, and the normally open contact 30-1 of the second energized time relay resets to the open state. The g position of the electric two-way switch valves MV3 and MV4 is energized, while the k position is de-energized. Therefore, the electric two-way switch valves MV3 and MV4 are in the closed position. The k position of the electric two-way switch valves MV1 and MV2 is energized, while the g position is de-energized. Therefore, the electric two-way switch valves MV1 and MV2 are in the open position. In this way, the medical switching control system completes the switching of the emergency tap water circuit cooling.

Claims

1. A medical automatic switching control system, comprising a water system and a control system, characterized in that: The water system is a backup emergency tap water system set up on the basis of a conventional cooling water system.

2. The medical automatic switching control system according to claim 1, characterized in that The water system mainly includes: Emergency tap water supply pipe (1), first shut-off valve (2), booster pump (3), check valve (4); And the second shut-off valve (5) and the emergency tap water drain pipe (6); And the original cooling system water supply pipe (7); And the first ball valve (8), the second ball valve (9), and the third ball valve (11); And medical equipment (10), original cooling system return water pipe (12); And temperature sensor (T-1), pressure switch (P-1), electric two-way valves (MV1), (MV2), (MV3) and (MV4); wherein: The original cooling system water supply pipe (7), pressure switch (P-1), temperature sensor (T-1), second ball valve (9), electric two-way switch valve (MV3), medical equipment (10), electric two-way switch valve (MV4), third ball valve (11), and original cooling system return water pipe (12) are connected in sequence to form the original cooling water pipeline system loop. The inlet of the first ball valve (8) is installed between the temperature sensor (T-1) and the inlet of the second ball valve (9), and the outlet of the first ball valve (8) is installed on the original cooling system return pipe (12) of the outlet of the third ball valve (11). The emergency tap water supply pipe (1), the first shut-off valve (2), the booster pump (3), the check valve (4) and the electric two-way switch valve (MV1) are connected in sequence to form the water supply pipeline of the emergency tap water switching system. The electric two-way switch valve (MV2), the second shut-off valve (5), and the emergency tap water drain pipe (6) are connected in sequence to form the drainage pipe of the emergency tap water switching system.

3. The medical automatic switching system according to claim 1, wherein : The control system mainly includes: a main circuit breaker (21), a pressurized water pump circuit breaker (22), an AC contactor (23), a pressurized water pump (3), and a control circuit; the control circuit includes a control circuit breaker (24), a temperature controller (25), a temperature sensor (T-1), a pressure switch (P-1), an intermediate relay (26), intermediate relay normally open contacts (26-1) and (26-3), intermediate relay normally closed contacts (26-2) and (26-4), a first energized time relay (29), first energized time relay normally open contacts (29-1) and (29-2), a second energized time relay (30), second energized time relay normally open contacts (30-1), an AC contactor coil (23-1), and electric two-way switching valves (MV1), (MV2), (MV3), and (MV4); wherein: The main circuit breaker (21) is the circuit switch for the entire control system; The booster pump (3) is connected to three live wires (L1, L2, L3) in sequence through an AC contactor (23) and a booster pump circuit breaker (22). The control circuit is connected to the live wire (L1) and the neutral wire (N) through the control circuit breaker (24); The temperature sensor (T-1) and pressure switch (P-1) are installed on the original cooling system water supply pipe (7); The temperature controller (25) of the control circuit is connected to the temperature sensor (T-1); the two power terminals (25-1) of the temperature controller (25) are connected to the neutral wire (N) and the live wire (L1) respectively; the two signal terminals (25-2) of the temperature controller (25) are connected to the live wire (L1) and the intermediate relay (26) respectively, and the other side of the intermediate relay (26) is connected to the neutral wire (N); The pressure switch (P-1) and the thermostat (25) are connected in parallel and connected to the live wire (L1) and the intermediate relay (26); The normally open contact (29-1) of the first energized time relay is connected in series with the coil (23-1) of the AC contactor, with one end connected to the live wire (L1) and the other end connected to the neutral wire (N). The normally open contact (26-1) of the intermediate relay and the first energized time relay (29) are connected in series, with one end connected to the live wire (L1) and the other end connected to the neutral wire (N). The normally closed contact (26-2) of the intermediate relay is connected in series with the second energized time relay (30), with one end connected to the live wire (L1) and the other end connected to the neutral wire (N). The normally open contact (26-3) of the intermediate relay is connected to the g terminal of the electric two-way switching valve (MV3) and (MV4), the normally open contact (30-1) of the second energized time relay is connected to the k terminal of the electric two-way switching valve (MV3) and (MV4), the other end of the normally open contact (26-3) of the intermediate relay and the normally open contact (30-1) of the second energized time relay is connected to the live wire (L1), and the other end of the electric two-way switching valve (MV3) and (MV4) is connected to the neutral wire (N). The normally closed contact (26-4) of the intermediate relay is connected to the g terminal of the electric two-way switching valves (MV1) and (MV2). The normally open contact (29-2) of the first energized time relay is connected to the k terminal of the electric two-way switching valves (MV1) and (MV2). The other end of the normally closed contact (26-4) of the intermediate relay and the normally open contact (29-2) of the second energized time relay are connected to the live wire (L1). The other end of the electric two-way switching valves (MV1) and (MV2) are connected to the neutral wire (N).

4. The medical automatic switching control system according to claim 3, wherein : The control circuit also includes a pressurized water pump operation indicator (27), which is connected in parallel with the AC contactor coil (23-1).

5. The medical automatic switching system according to claim 3, wherein : The control circuit also includes an emergency water system operation indicator (28), which is connected in parallel with the first energized time relay (29).

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