Ventilation system of radiopharmaceutical production workshop

Abstract

The utility model discloses a ventilation system of a radiopharmaceutical production workshop, which comprises a production workshop and an air purification treatment device for conveying standard air to the production workshop, the production workshop is provided with a radioactive operation area, and an air inlet pipe, an air return pipe and an exhaust pipe of which the other ends are fixedly connected with the air purification treatment device are connected in the radioactive operation area; electric control valve assemblies are arranged on the air return pipe and the air exhaust pipe, a signal sensing assembly is arranged in the radioactive operation area, and the signal sensing assembly is electrically connected with the electric control valve assemblies, so that when the signal sensing assembly senses an electric signal, the electric control valve assemblies conduct opening and closing actions to control the air return pipe to be in a closed state and the air exhaust pipe to be in a ventilation state; and when the signal sensing assembly does not sense the electric signal, the electric control valve assembly controls the air return pipe to return to the ventilation state and the exhaust pipe to return to the closed air return state. The ventilation system of the production workshop is sensitive in induction, and can reduce energy consumption and save production cost while ensuring the safety of operators.

Description

Technical Field

[0001] The utility model belongs to the technical field of radioactive drug production, and in particular relates to a ventilation system for a radioactive drug production workshop. Background Art

[0002] Chemical synthesis reactions occur during the production of radioactive drugs, and this reaction process will inevitably produce radioactive gases. These radioactive gases pollute the environment and cause irreversible damage to the health of operators. Therefore, it is best to adsorb and discharge them in time to avoid spreading and causing harm to the environment and personnel.

[0003] The production time of radioactive drugs is generally short. The commercial products are produced for about 4-6 hours a day, and clinical samples are produced once every 2-3 days, and some are even produced once a week. The workshop for radioactive drug production must be equipped with a ventilation system, firstly to ensure that the workshop environment meets GMP requirements (temperature at 18-26℃, humidity at 45-65%); secondly, to promptly discharge possible radioactive gases to ensure the safety of workshop workers.

[0004] At present, the existing workshop ventilation system implements return air treatment in production areas that do not involve radioactive operations (such as changing rooms, corridors, sanitary ware rooms, preparation rooms, etc.); and implements full exhaust treatment in areas that involve radioactive operations (such as operation rooms, back areas, outsourcing rooms, etc.). Since the back areas and outsourcing rooms are ordinary areas, the ventilation frequency is low, the air supply volume is small, and from the perspective of drug safety, it is not appropriate to set up return air; and the operation room requires a high ventilation frequency and a large air supply volume due to the high content of radioactive substances. In the actual production of radioactive drugs, there are only part of the time in the workshop operation room for production, but the operation room is still fully exhausted 24 hours a day, and the clean air is not recycled and reused, which causes energy waste and does not meet the requirements of energy conservation and emission reduction.

[0005] The utility model is made based on this situation. Utility Model Content

[0006] The utility model aims to solve the problem of energy waste in the ventilation system of radioactive drug production in the prior art and to provide a ventilation system for a radioactive drug production workshop with automatic control and energy saving and emission reduction. The ventilation system has sensitive sensing and can reduce energy consumption and save production costs while ensuring the safety of operators.

[0007] The utility model is realized by the following technical solutions:

[0008] A ventilation system for a radioactive drug production workshop comprises a production workshop and an air purification treatment device for delivering qualified air to the production workshop, wherein the production workshop is provided with a radioactive operation area, wherein the radioactive operation area is connected with an air inlet duct, a return duct, and an exhaust duct, each of which has the other end fixedly connected to the air purification treatment device, wherein the return duct and the exhaust duct are provided with an electric control valve assembly, wherein a signal sensing assembly is provided in the radioactive operation area, wherein the signal sensing assembly is electrically connected to the electric control valve assembly, so that when the signal sensing assembly senses an electrical signal, the electric control valve assembly performs a switch action to control the return duct to be in a closed state while the exhaust duct is in a ventilation state; and when the signal sensing assembly does not sense an electrical signal, the electric control valve assembly controls the return duct to return to the ventilation state and the exhaust duct to return to the closed return state.

[0009] In the ventilation system of the radioactive drug production workshop as described above, an electric controller is provided between the signal sensing component and the electric control valve component for controlling the switching action of the electric control valve component according to the electric signal sensed by the signal sensing component.

[0010] In the ventilation system of the radioactive drug production workshop as described above, the electric control valve assembly includes a first electric valve installed on the exhaust duct and a second electric valve installed on the return air duct. When the signal sensing assembly sends an electrical signal, the electric controller controls the second electric valve to close and controls the first electric valve to open.

[0011] In the ventilation system of the radioactive drug production workshop as described above, the radioactive operation area is provided with a connecting pipe, and the other end of the connecting pipe is connected to the exhaust duct and the return air duct; the electric control valve assembly is a three-way electric valve installed at the connection between the connecting pipe, the exhaust duct and the return air duct, and when the signal sensing assembly sends an electrical signal, the electric controller controls the three-way electric valve to close toward one side of the return air duct and open toward one side of the exhaust duct at the same time.

[0012] In the ventilation system of the radioactive drug production workshop as described above, the signal sensing component includes an access control linkage system, an infrared detector, a radioactive aerosol detection device, an image recognition sensor, and an emergency stop device.

[0013] In the ventilation system of the radioactive drug production workshop as described above, air volume valves are provided on the return air duct and the exhaust air duct of the radioactive operation area.

[0014] In the ventilation system of the radioactive drug production workshop as described above, the other end of the exhaust pipe is connected to a radioactive tail gas treatment device.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] The utility model radioactive drug production ventilation system can automatically and accurately control the ventilation state of the radioactive operation area according to the working state of the production workshop; can greatly reduce energy consumption, save energy and reduce emissions, and reduce energy costs for enterprises; and can reduce the workload of the ventilation system and extend the service life of the ventilation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the ventilation system of the radioactive drug production workshop in Example 1;

[0018] Figure 2 This is a schematic diagram of the structure of the ventilation system of the radioactive drug production workshop in Example 2;

[0019] Figure 3 This is an enlarged schematic diagram of the signal sensing component at A in this embodiment 1. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] Embodiment 1

[0022] like Figure 1 As shown, the embodiment of the utility model includes a production workshop 1 and an air purification treatment device 2 for delivering qualified air to the production workshop 1, the production workshop 1 is provided with a radioactive operation area 11, the radioactive operation area 11 is connected with an air inlet duct 3, a return air duct 4, and an exhaust duct 5, the other ends of which are fixedly connected to the air purification treatment device 2, an electric control valve assembly 6 is provided on the return air duct 4 and the exhaust air duct 5, a signal sensing assembly 7 is provided in the radioactive operation area 11, the signal sensing assembly 7 is electrically connected to the electric control valve assembly 6, so that when the signal sensing assembly 7 senses an electrical signal, the electric control valve assembly 6 performs a switching action to control the return air duct 4 to be in a closed state and the exhaust air duct 5 to be in a ventilation state; when the signal sensing assembly 7 does not sense an electrical signal, the electric control valve assembly 6 controls the return air duct 4 to return to the ventilation state and the exhaust air duct 5 to return to the closed return air state.

[0023] The radioactive drug production ventilation system of the utility model can automatically and accurately control the ventilation state of the radioactive operation area 11 according to the working state of the production workshop 1; can greatly reduce energy consumption, save energy and reduce emissions, and reduce energy costs for enterprises; and can reduce the workload of the ventilation system and extend the service life of the ventilation system.

[0024] In order to increase the accuracy of the electric control, an electric controller 8 is provided between the signal sensing component 7 and the electric control valve component 6 to control the switch action of the electric control valve component 6 according to the electric signal sensed by the signal sensing component 7. The electric controller 8 makes a judgment based on the signal sensed by the signal sensing component 7 and accurately controls the switch state of the electric control valve component 6.

[0025] Specifically, Figure 1 As shown, the electric control valve assembly 6 includes a first electric valve 61 installed on the exhaust duct 5 and a second electric valve 62 installed on the return air duct 4. When the signal sensing assembly 7 sends an electrical signal, the electric controller 8 controls the second electric valve 62 to close and controls the first electric valve 61 to open.

[0026] When the signal sensing component 7 sends out an electrical signal, the electric controller 8 controls the second electric valve 62 to close, and controls the first electric valve 61 to open, so that the corresponding radioactive operating area 11 is in a full exhaust state.

[0027] like Figure 3 As shown, the signal sensing component 7 includes a door access linkage system 71 , an infrared detector 72 , a radioactive aerosol detection device 73 , an image recognition sensor 74 , and an emergency stop device 75 .

[0028] Specifically, when the signal sensing component 7 of the utility model senses the following situation, it will send a signal to the electric controller 8, and the electric controller 8 controls the second electric valve 62 on the return air duct in the radioactive operation area 11 to close, and at the same time, the first electric valve 61 on the exhaust duct 5 is opened, so that the radioactive operation area 11 automatically switches to the full exhaust state:

[0029] a) The access control linkage system 71 detects the access control input signal, the workshop door is opened, and someone enters the workshop;

[0030] b) The infrared detector 72 detects human activity in the radioactive operation area 11;

[0031] c) The radioactive aerosol detection device 73 detects that the radiation level exceeds the set value;

[0032] d) The image recognition sensor 74 (camera) detects human activity in the radioactive operation area 11;

[0033] e) In case of other unexpected situations, press the emergency stop device 75.

[0034] When none of the above five signals are detected, the ventilation system switches to a full return air state, that is, the second electric valve 62 on the return air duct 4 is opened, and the first electric valve 61 on the exhaust air duct 5 is closed.

[0035] like Figure 1As shown, in the utility model, the return air duct 4 and the exhaust duct 5 of the radioactive operation area 11 are both provided with an air volume valve 9. The air volume valve can control the air and moisture content transported out of the production workshop 1, and achieve the purpose of energy saving and emission reduction while ensuring the safety of the workshop personnel. The other end of the exhaust duct 5 is connected to a radioactive tail gas treatment device 10, which treats the radioactive tail gas discharged from the exhaust duct 5 in the radioactive operation area 11 and then discharges it into the atmosphere to avoid polluting the environment.

[0036] In this embodiment, the air purification device 2 is provided with an air inlet 21, an air inlet 22, and an air outlet 23 for inhaling fresh air from the outside, the air inlet 22 is connected to the return air duct 4, and the air outlet 23 is connected to the air inlet duct 3. The air purification device 2 filters, purifies, and heats the fresh air from the outside and the air discharged from the production workshop 1 through the total return air duct 4, and then sends it to various areas of the production workshop 1 through the air inlet duct 3, which can not only maintain the temperature and humidity of the production workshop 1, ensuring that the environment of the production workshop 1 meets the GMP requirements, but also recycle the exhausted air, which can greatly reduce energy consumption, save energy and reduce emissions, and reduce energy costs for enterprises.

[0037] Embodiment 2

[0038] like Figure 2 As shown, the difference from the first embodiment is that in this embodiment, the radioactive operation area 11 is provided with a connecting pipe 110, and the other end of the connecting pipe 110 is connected to the exhaust pipe 5 and the return pipe 4; the electric control valve assembly 6 is a three-way electric valve 63 installed at the connection of the connecting pipe 110, the exhaust pipe 5 and the return pipe 4. When the signal sensing assembly 7 sends an electric signal, the electric controller 8 controls the three-way electric valve 63 to close toward one side of the return pipe 4 and open toward one side of the exhaust pipe 5. In this way, the three-way electric valve 63 is used to control the ventilation and closing state of the return pipe 4 and the exhaust pipe 5, which can save more material costs compared with the use of two electric valves in the first embodiment.

[0039] like Figure 3 As shown, similar to the first embodiment, the signal sensing component 7 of this embodiment includes a door access linkage system 71 , an infrared detector 72 , a radioactive aerosol detection device 73 , an image recognition sensor 74 , and an emergency stop device 75 .

[0040] Specifically, when the signal sensing component 7 of this embodiment senses the five situations listed in the first embodiment, it will send a signal to the electronic controller 8, and the electronic controller 8 will control the three-way electric valve 63 to close to one side of the return air duct 4 and open to one side of the exhaust duct 5, so that the radioactive operation area 11 automatically switches to the full exhaust state.

[0041] When none of the five signals is detected, the ventilation system is switched to a full return air state, that is, the three-way electric valve 63 is opened toward one side of the return air duct 4 and closed toward one side of the exhaust air duct 5.

Claims

1. A ventilation system for a radioactive drug production workshop, comprising a production workshop (1) and an air purification device (2) for delivering qualified air to the production workshop (1), characterized in that The production workshop (1) is provided with a radioactive operation area (11), and the radioactive operation area (11) is connected with an air inlet pipe (3), a return air pipe (4), and an exhaust air pipe (5), the other ends of which are fixedly connected to the air purification treatment device (2). The return air pipe (4) and the exhaust air pipe (5) are both provided with an electric control valve assembly (6). The radioactive operation area (11) is provided with a signal sensing assembly (7), and the signal sensing assembly (7) is electrically connected to the electric control valve assembly (6), so that when the signal sensing assembly (7) senses an electrical signal, the electric control valve assembly (6) performs a switch action to control the return air pipe (4) to be in a closed state and the exhaust air pipe (5) to be in a ventilation state; when the signal sensing assembly (7) does not sense an electrical signal, the electric control valve assembly (6) controls the return air pipe (4) to return to the ventilation state and the exhaust air pipe (5) to return to the closed return air state.

2. The ventilation system for a radioactive drug production workshop according to claim 1 is characterized in that An electric controller (8) is provided between the signal sensing component (7) and the electric control valve component (6) for controlling the switching action of the electric control valve component (6) according to the electric signal sensed by the signal sensing component (7).

3. The ventilation system for a radioactive drug production workshop according to claim 2 is characterized in that The electric control valve assembly (6) comprises a first electric valve (61) installed on the exhaust duct (5) and a second electric valve (62) installed on the return duct (4); when the signal sensing assembly (7) sends an electric signal, the electric controller (8) controls the second electric valve (62) to close and controls the first electric valve (61) to open.

4. The ventilation system for a radioactive drug production workshop according to claim 2, characterized in that The radioactive operation area (11) is provided with a connecting pipe (110), the other end of which is connected to the exhaust pipe (5) and the return air pipe (4); the electric control valve assembly (6) is a three-way electric valve (63) installed at the connection between the connecting pipe (110), the exhaust pipe (5) and the return air pipe (4); when the signal sensing assembly (7) sends an electrical signal, the electric controller (8) controls the three-way electric valve (63) to close toward one side of the return air pipe (4) and open toward one side of the exhaust pipe (5).

5. The ventilation system for a radioactive drug production workshop according to any one of claims 1 to 4, characterized in that The signal sensing component (7) comprises a door control linkage system (71), an infrared detector (72), a radioactive aerosol detection device (73), an image recognition sensor (74), and an emergency stop device (75).

6. The ventilation system for a radioactive drug production workshop according to claim 1, characterized in that Air volume valves (9) are provided on the return air duct (4) and the exhaust air duct (5) of the radioactive operation area (11).

7. The ventilation system for a radioactive drug production workshop according to claim 1, characterized in that The other end of the exhaust pipe (5) is connected to a radioactive tail gas treatment device (10).

Images