A special clean room for preventing electromagnetic interference and its sewage discharge and collection device

Abstract

The present invention discloses a special clean room for preventing electromagnetic interference and a sewage discharge and collection device thereof. The outer layer of the clean room is enclosed with an electromagnetic protection layer, a civil structure plate is arranged in the middle of the clean room, and a middle partition electromagnetic protection layer is laid on the top surface of the civil structure plate. The middle partition electromagnetic protection layer divides the clean room into two separate shielded spaces, the upper shielded space is the daily work and activity space of scientific researchers, and the lower shielded space is the storage space of the sewage discharge and collection device; the sewage discharge and collection device mainly includes a sewage storage box, a sewage pump control cabinet and a plurality of sewage pumps with self-contained reamer types. The present invention effectively prevents electromagnetic waves from entering the clean room through the sewage pipe, and provides a solution to the sewage discharge problem in the planning and design of large clean rooms in the future. In addition, the use of a complete set of sewage discharge devices also improves the drainage stability of the system, shortens the project progress and prolongs the service life of the project.

Description

Technical Field

[0001] The invention relates to the field of sewage discharge and collection, and in particular to a special clean room that is resistant to electromagnetic interference and a sewage discharge and collection device thereof. Background Art

[0002] Clean rooms in the fields of chemistry, biochemistry, medicine and pharmaceuticals are required to have the function of preventing external electromagnetic interference. At present, in order to avoid external electromagnetic waves from interfering with the clean room, toilets are often set outside the clean room or sewage is temporarily stored in the clean room, which is very inconvenient for the daily work of scientific researchers.

[0003] According to the transmission characteristics of electromagnetic waves, electromagnetic waves will inevitably cause serious attenuation when transmitted in domestic sewage. However, due to the intermittent discharge of sewage, the sewage discharge pipeline can easily become a channel for electromagnetic wave transmission. Based on this, the entry and exit of pipelines such as domestic sewage containing more impurities in such special clean rooms becomes a key design point. Summary of the invention

[0004] The purpose of the present invention is to provide a special clean room that is resistant to electromagnetic interference and a sewage discharge and collection device thereof, so as to solve the problem of preventing electromagnetic waves from entering the clean room through a sewage discharge pipe.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] The present invention discloses a special clean room for preventing electromagnetic interference, comprising a clean room, wherein the outer layer of the clean room is enclosed by an electromagnetic protection layer, a civil structure plate is arranged in the middle of the clean room, a middle partition electromagnetic protection layer is laid on the top surface of the civil structure plate, and the middle partition electromagnetic protection layer divides the clean room into two separate shielded spaces, the upper shielded space is the daily work and activity space of scientific researchers, and the lower shielded space is the storage space of a sewage discharge and collection device.

[0007] A sewage discharge and collection device for the above-mentioned special clean room for electromagnetic interference prevention, comprising a sewage storage box, a sewage pump control cabinet and a plurality of sewage pumps with self-reamer type; the outer wall of the sewage storage box is enclosed by an electromagnetic protection layer;

[0008] A sewage receiving protection pipe is arranged on the top of the sewage storage box, a sewage receiving protection pipe has a sewage receiving reserved flange interface at its upper end, and a sewage receiving protection pipe extends to the interior of the sewage storage box;

[0009] The sewage receiving reserved flange interface is connected to the interface of the clean room sewage protection pipeline through a bolt assembly, the clean room sewage protection pipeline is preset on the civil structure plate, and a conductive gasket is provided between the sewage receiving reserved flange interface and the interface of the clean room sewage protection pipeline;

[0010] Each of the sewage pumps is located inside the sewage storage box, and the sewage outlet of each of the sewage pumps is connected to the sewage main pipeline arranged inside the sewage storage box through a pipeline, and the sewage outlet of the sewage main pipeline penetrates the side wall of the upper part of the sewage storage box and extends to the outside;

[0011] The sewage pump control cabinet is located outside the sewage storage box and is electrically connected to each of the sewage pumps through a wire.

[0012] Furthermore, a liquid level detection sensor is provided inside the sewage storage box, and the liquid level detection sensor is electrically connected to the sewage pump control cabinet through a wire.

[0013] Furthermore, the number of the sewage pumps is set to two, and the liquid level detection sensor is set to have three liquid level values, namely H 0 , H 1 and H 2 , the H 0 , H 1 and H 2 The liquid level setting value increases successively, and the H 0 It is the pump stop level value;

[0014] The lower port of the sewage receiving protection pipe is lower than the H 0 , and the distance from H 0 The height difference is ΔH, and the ΔH is not less than 0.5m;

[0015] When the sewage level in the sewage storage box reaches H 1 When the sewage level in the sewage storage tank reaches H 2 When the two sewage pumps work simultaneously.

[0016] Furthermore, a vent and a manhole shielding door are provided on the top of the dirt storage box.

[0017] Furthermore, the vent is connected to the outside through a ventilation extension pipe, and a honeycomb waveguide window is provided on the outer end of the ventilation extension pipe;

[0018] A conductive gasket is arranged between the ventilation extension pipe and the flange mounting end surface of the ventilation port.

[0019] Furthermore, the sewage main pipeline is connected to the P-type elbow located outside through the sewage extension pipeline, and a conductive gasket is provided between the sewage extension pipeline and the flange mounting end faces of the sewage main pipeline and the P-type elbow;

[0020] The P-type elbow comprises a U-shaped water seal portion and a heightened portion connected together, wherein the height of the U-shaped water seal portion is H 3 , the height of the increased part is H 4 , one end of the U-shaped water seal portion is connected to the sewage extension pipe;

[0021] The H 3 Not less than 0.25m, the H 4 Not less than 0.3m.

[0022] Furthermore, the ventilation extension pipe and the sewage extension pipe are both made of stainless steel pipes, and a first electromagnetic protection reinforcement plate is welded at the nodes where the ventilation extension pipe and the sewage extension pipe penetrate the electromagnetic protection layer of the clean room.

[0023] Furthermore, a second electromagnetic protection reinforcement plate is welded at a penetration node between the clean room sewage protection pipe and the civil structure plate.

[0024] Furthermore, a slope is provided at the bottom of the inner cavity of the sewage storage box, the lower port of the sewage receiving protection pipe is located at the high part of the slope, and each of the sewage pumps is located at the low part of the slope.

[0025] Compared with the prior art, the beneficial technical effects of the present invention are:

[0026] The present invention discloses a special clean room for preventing electromagnetic interference and a sewage discharge and collection device thereof. The clean room is mainly enclosed by an electromagnetic protection layer of the clean room. A civil structure plate is arranged in the middle of the enclosed space. A middle partition electromagnetic protection layer is laid on the top surface of the civil structure plate. The middle partition electromagnetic protection layer divides the clean room into two separate shielded spaces, the upper shielded space is the daily work and activity space for scientific researchers, and the lower shielded space is the storage space for the sewage discharge and collection device. The sewage discharge and collection device mainly comprises a sewage storage box, a sewage pump control cabinet and a plurality of sewage pumps. The sewage pipeline in the clean room enters the sewage storage box through the clean room sewage discharge protection pipe and the sewage receiving protection pipe. The sewage protection pipe extends below the sewage surface, effectively blocking electromagnetic radiation. The stainless steel pipe is provided with thick square galvanized steel plates as transitions at the nodes of entering and exiting the electromagnetic protection layer, so that the stainless steel pipe is closely connected to the electromagnetic protection layer to prevent electromagnetic waves from entering here; in the sewage discharge process, the U-shaped water seal portion effectively ensures a high water seal, thereby achieving indoor and outdoor electromagnetic blocking effects; in short, the present invention effectively prevents electromagnetic waves from entering the clean room through the sewage pipe, and provides a solution to the sewage discharge problem in the planning and design of future large clean rooms. In addition, the use of a complete set of sewage discharge equipment also improves the drainage stability of the system, shortens the project progress and extends the service life of the project. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below in conjunction with the accompanying drawings.

[0028] Figure 1 A clean room equipped with a sewage discharge and collection device;

[0029] Figure 2 It is the right view of the sewage discharge and collection device;

[0030] Figure 3 for Figure 1 A local enlarged view of point A;

[0031] Figure 4 for Figure 1 A local enlarged view of point B;

[0032] Figure 5 for Figure 1 A partial enlarged view of point C.

[0033] Explanation of the accompanying drawings: 1. Sewage storage box; 2. Sewage pump control cabinet; 3. Sewage pump; 4. Sewage receiving protection pipe; 5. Clean room sewage protection pipe; 6. Civil structure plate; 7. Sewage receiving reserved flange interface; 8. Main sewage pipe; 9. Liquid level detection sensor; 10. Ventilation port; 11. Manhole shielding door; 12. Ventilation extension pipe; 13. Honeycomb waveguide window; 14. Sewage extension pipe; 15. P-type elbow; 1501. U-shaped water seal part; 1502. Increased part; 16. Clean room; 17. First electromagnetic protection reinforcement plate; 18. Second electromagnetic protection reinforcement plate; 19. Slope. DETAILED DESCRIPTION

[0034] 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.

[0035] like Figure 1 As shown, in this embodiment, a special clean room with anti-electromagnetic interference is disclosed, including a clean room 16, the outer layer of the clean room 16 is enclosed with an electromagnetic protection layer, and a civil structure plate 6 is arranged in the middle of the clean room 16. The top surface of the civil structure plate 6 is paved with a middle partition electromagnetic protection layer, and the middle partition electromagnetic protection layer divides the clean room 16 into two separate shielded spaces, the upper shielded space is the daily work and activity space of scientific researchers, and the lower shielded space is the storage space of the sewage discharge collection device. The civil structure plate 6 can be a cast-in-place concrete plate or a prefabricated reinforced concrete plate.

[0036] like Figure 1 and 2 As shown, this embodiment also discloses a sewage discharge and collection device, including a sewage storage box 1, a sewage pump control cabinet 2 and a plurality of self-reamer sewage pumps 3. The outer wall of the sewage storage box 1 is enclosed by an electromagnetic protection layer.

[0037] A sewage receiving protection pipe 4 is fixed on the top of the sewage storage box 1, and the sewage receiving protection pipe 4 is tightly welded to the electromagnetic protection layer outside the sewage storage box 1. A sewage receiving reserved flange interface 7 is welded to the upper end of the sewage receiving protection pipe 4, and the lower end of the sewage receiving protection pipe 4 extends to the interior of the sewage storage box 1.

[0038] like Figure 3As shown, the sewage receiving reserved flange interface 7 is connected to the interface of the clean room sewage protection pipe 5 through a bolt assembly. The clean room sewage protection pipe 5 is preset on the civil structure plate 6. A conductive gasket is provided between the sewage receiving reserved flange interface 7 and the interface of the clean room sewage protection pipe 5. Conductive gaskets, also known as EMI gaskets, are often filled in the gaps of electronic equipment chassis. They can maintain the conductive continuity of the gaps, reduce the contact resistance of holes, gaps, and grooves, thereby reducing the voltage at both ends of the joint and reducing the electromagnetic leakage of the gaps. The conductive gaskets are existing products and will not be described here. The sewage pipeline in the clean room enters the sewage storage box 1 through the clean room sewage protection pipe 5 and the sewage receiving protection pipe 4, and the lower port of the sewage pipeline is flush with the lower port of the sewage receiving protection pipe 4.

[0039] Each sewage pump 3 is located inside the sewage storage box 1, and the sewage outlet of each sewage pump 3 is connected with the sewage main pipe 8 arranged inside the sewage storage box 1 through a pipe. The sewage outlet of the sewage main pipe 8 passes through the side wall of the upper part of the sewage storage box 1 and extends to the outside. The sewage main pipe 8 is fixed to the sewage storage box 1 and the penetration connection with the external electromagnetic protection layer is sealed by welding.

[0040] In order to facilitate the sewage pump 3 to discharge sewage, a slope 19 is provided at the bottom of the inner cavity of the sewage storage box 1 . The lower end of the sewage receiving protection pipe 4 is located at the high part of the slope 19 , and each sewage pump 3 is located at the low part of the slope 19 .

[0041] The sewage pump control cabinet 2 is located outside the sewage storage tank 1 and is electrically connected to each sewage pump 3 through a wire. A liquid level detection sensor 9 is arranged inside the sewage storage tank 1, and the liquid level detection sensor 9 is electrically connected to the sewage pump control cabinet 2 through a wire. The liquid level detection sensor 9 monitors the change of the sewage liquid level in the sewage storage tank 1, and feeds back the electrical signal to the sewage pump control cabinet 2, and the sewage pump control cabinet 2 automatically controls the sewage pump 3 to start the sewage discharge work.

[0042] In this embodiment, the number of sewage pumps 3 is set to two, and the liquid level detection sensor 9 is set to three liquid level values, namely H 0 , H 1 and H 2 , H 0 , H 1 and H 2 The liquid level setting values ​​of H 0 is the pump stop level value. When the sewage level reaches H 0 When the liquid level is lower than H, each sewage pump 3 stops working. 0 , and the distance H 0 The height difference is ΔH.

[0043] ΔH varies with the shielding effectiveness achieved in the clean room and is also affected by the difference in the conductivity of sewage. Therefore, the height of the water seal in the equipment and the water trap should be determined after on-site testing by the shielding design unit. Usually, the length of the water seal between indoors and outdoors should not be less than 0.5m.

[0044] When the sewage level in the sewage storage box 1 reaches H 1 When the sewage level in the sewage storage tank 1 reaches H 2 When the two sewage pumps 3 work at the same time.

[0045] H 0 , H 1 and H 2 The setting value should be determined after calculation based on the actual sewage discharge of the project. 0 The setting of the ΔH water seal height requirement should not only meet the requirements, but also take into account the anti-blocking distance between the bottom of the protection pipe 4 and the bottom of the pool (not less than 0.5m). 0 It should not be less than 1.0m. 1 With H 0 The sewage volume should not be less than the water output of a single pump after starting for 5 minutes, and the sewage pump should not be started more than 6 times per hour. 1 With H 2 The sewage volume should not be less than the water output of the dual pumps after starting for 5 minutes, and the sewage pump should not be started more than 6 times per hour.

[0046] A vent 10 and a manhole shielding door 11 are provided on the top of the sewage storage box 1. The vent 10 is fixed to the sewage storage box 1 and is tightly welded to the peripheral electromagnetic protection layer. Furthermore, the vent 10 is connected to the outside through a ventilation extension pipe 12. A conductive gasket is also provided between the ventilation extension pipe 12 and the flange mounting end face of the vent 10. A honeycomb waveguide window 13 is provided on the outer port of the ventilation extension pipe 12. The honeycomb waveguide window 13 blocks electromagnetic waves from passing through the outer port of the ventilation extension pipe 12.

[0047] The sewage main pipe 8 is connected to the P-type elbow 15 located outside through the sewage extension pipe 14 , and a conductive gasket is arranged between the flange mounting end faces of the sewage extension pipe 14 and the sewage main pipe 8 and the P-type elbow 15 .

[0048] The P-type elbow 15 includes a U-shaped water seal portion 1501 and a heightened portion 1502 connected together. The U-shaped water seal portion 1501 and the heightened portion 1502 are made by integral processing. The height of the U-shaped water seal portion 1501 is H 3 , the height of the heightened portion 1502 is H 4 One end of the U-shaped water seal portion 1501 is connected to the sewage extension pipe 14.

[0049] During the sewage discharge process, the U-shaped water seal portion 1501 effectively ensures that there is a height of H 3 water seal, thereby achieving indoor and outdoor electromagnetic blocking effect.

[0050] The height of the raised portion 1502 is H 4 , in order to avoid the loss of water seal height caused by unstable operation of submersible sewage pump, the super height is set. Due to the instability of the control system in actual use, the sewage pump was not stopped in time, causing the water seal height H 3 loss, so consider setting an ultra-high H 4 After the sewage pump stops working, the sewage in the heightened portion 1502 flows back to the U-shaped water seal portion 1501 to avoid the water seal height H 3 Height of loss.

[0051] H 3 The shielding efficiency of the clean room varies, and it is also affected by the difference in the conductivity of the sewage. Therefore, the height of the water seal in the equipment and the water trap should be determined after on-site testing by the shielding design unit. Usually, the length of the water seal between indoor and outdoor should not be less than 0.5m, that is, H 3 Not less than 0.25m, H 4 Not less than 0.3m.

[0052] like Figure 1 and 5 As shown, in this embodiment, the ventilation extension pipe 12 and the sewage extension pipe 14 are both made of stainless steel pipes, and the first electromagnetic protection reinforcement plate 17 is welded at the penetration node of the ventilation extension pipe 12 and the sewage extension pipe 14 and the electromagnetic protection layer of the clean room 16. In this embodiment, the first electromagnetic protection reinforcement plate 17 is made of a 5mm thick square galvanized steel plate, and the square galvanized steel plate is provided with an avoidance hole. The avoidance hole is fully welded to the outer wall of the ventilation extension pipe 12 or the sewage extension pipe 14 in an annular manner, and the outer ring of the square galvanized steel plate is welded to the electromagnetic protection layer of the clean room 16. The first electromagnetic protection reinforcement plate 17 serves as a transition, so that the stainless steel pipe is closely connected to the electromagnetic protection layer to prevent electromagnetic waves from entering here.

[0053] like Figure 1 and 4 As shown, a second electromagnetic protection reinforcement plate 18 is welded at the node where the clean room sewage protection pipe 5 and the electromagnetic protection layer of the civil structure plate 6 at the bottom of the clean room penetrate. The second electromagnetic protection reinforcement plate 18 has the same structure and function as the first electromagnetic protection reinforcement plate 17, and the second electromagnetic protection reinforcement plate 18 also uses a 5mm thick square galvanized steel plate. It should be noted that when the first electromagnetic protection reinforcement plate 17 and the second electromagnetic protection reinforcement plate 18 are manufactured, the side length of the steel plate is twice the diameter of the corresponding pipe.

[0054] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A sewage discharge and collection device for a special clean room for preventing electromagnetic interference, comprising a clean room (16), characterized in that: The outer layer of the clean room (16) is enclosed by an electromagnetic protection layer, a civil structure plate (6) is arranged in the middle of the clean room (16), and a middle partition electromagnetic protection layer is laid on the top surface of the civil structure plate (6), and the middle partition electromagnetic protection layer divides the clean room (16) into two separate shielded spaces, the upper shielded space is the daily work and activity space of scientific researchers, and the lower shielded space is the storage space of the sewage discharge collection device; The sewage discharge and collection device comprises a sewage storage box (1), a sewage pump control cabinet (2) and a plurality of sewage pumps (3) with self-contained reamer types; the outer wall of the sewage storage box (1) is enclosed by an electromagnetic protection layer; A sewage receiving protection pipe (4) is arranged on the top of the sewage storage box (1), a sewage receiving protection pipe (4) is arranged at the upper end thereof with a sewage receiving reserved flange interface (7), and a lower end thereof extends to the interior of the sewage storage box (1); The sewage receiving reserved flange interface (7) is connected to the interface of the clean room sewage protection pipe (5) through a bolt assembly; the clean room sewage protection pipe (5) is preset on the civil structure plate (6); a second electromagnetic protection reinforcement plate (18) is welded at the node where the clean room sewage protection pipe (5) and the electromagnetic protection layer of the civil structure plate (6) penetrate; a conductive gasket is provided between the sewage receiving reserved flange interface (7) and the interface of the clean room sewage protection pipe (5); Each of the sewage pumps (3) is located inside the sewage storage box (1), and the sewage outlet of each of the sewage pumps (3) is connected to a sewage main pipeline (8) arranged inside the sewage storage box (1) through a pipeline, and the sewage outlet of the sewage main pipeline (8) penetrates the side wall of the upper part of the sewage storage box (1) and then extends to the outside; The sewage pump control cabinet (2) is located outside the sewage storage box (1) and is electrically connected to each sewage pump (3) via a wire.

2. The sewage discharge and collection device according to claim 1, characterized in that: A liquid level detection sensor (9) is arranged inside the sewage storage box (1), and the liquid level detection sensor (9) is electrically connected to the sewage pump control cabinet (2) via a wire.

3. The sewage discharge and collection device according to claim 2, characterized in that: The number of the sewage pumps (3) is set to two, and the liquid level detection sensor (9) is set to have three liquid level values, namely H0, H1 and H2, the liquid level setting values ​​of H0, H1 and H2 are increased in sequence, and H0 is the pump stop liquid level value; The lower end of the sewage receiving protection pipe (4) is lower than H0, and the height difference from H0 is ΔH, and the ΔH is not less than 0.5 m; When the sewage level in the sewage storage box (1) reaches H1, a single sewage pump (3) works or the two sewage pumps (3) work alternately and individually; when the sewage level in the sewage storage box (1) reaches H2, the two sewage pumps (3) work simultaneously.

4. The sewage discharge and collection device according to claim 1, characterized in that: The top of the dirt storage box (1) is provided with a vent (10) and a manhole shielding door (11).

5. The sewage discharge and collection device according to claim 4, characterized in that: The vent (10) is in communication with the outside world via a vent extension pipe (12), and a honeycomb waveguide window (13) is provided on the outer end of the vent extension pipe (12); A conductive gasket is provided between the ventilation extension pipe (12) and the flange mounting end surface of the ventilation port (10).

6. The sewage discharge and collection device according to claim 5, characterized in that: The sewage main pipe (8) is connected to a P-type elbow (15) located outside through a sewage extension pipe (14), and a conductive gasket is provided between the sewage extension pipe (14) and the flange mounting end faces of the sewage main pipe (8) and the P-type elbow (15); The P-type elbow (15) comprises a U-shaped water seal portion (1501) and a heightened portion (1502) which are connected together, the height of the U-shaped water seal portion (1501) is H3, the height of the heightened portion (1502) is H4, and one end of the U-shaped water seal portion (1501) is connected to the sewage extension pipe (14); The H3 is not less than 0.25m, and the H4 is not less than 0.3m.

7. The sewage discharge and collection device according to claim 6, characterized in that: The ventilation extension pipe (12) and the sewage extension pipe (14) are both made of stainless steel pipes, and a first electromagnetic protection reinforcement plate (17) is welded at the nodes where the ventilation extension pipe (12) and the sewage extension pipe (14) penetrate the electromagnetic protection layer of the clean room (16).

8. The sewage discharge and collection device according to claim 1, characterized in that: The bottom of the inner cavity of the sewage storage box (1) is provided with a slope (19), the lower port of the sewage receiving protection pipe (4) is located at the high part of the slope (19), and each of the sewage pumps (3) is located at the low part of the slope (19).

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