A switch cabinet pressure relief device

Abstract

The invention discloses a switch cabinet pressure relief device, including a pressure relief pipe, a conduit, a cover plate, a round box, a pump body, a liquid storage tank, a lead-out pipe, a spray head, an adsorption filter plate, an input conduit and an output conduit. The invention is beneficial in that: the liquid sprayed by the spray head contacts with the pressure relief gas flowing through, which can not only humidify the harmful gas and microparticles in the gas, but also further absorb heat and cool down, increase the buffering of the pressure relief gas, further deepen the adsorption of impurities in the pressure relief gas, achieve harmless pressure relief and drainage, and solve the problem of high pressure inside the switch cabinet and inconvenience in opening the cabinet; through the low-temperature liquid flowing inside the plurality of hollow blades and under the blowing and rotating action of the hollow blades, the cooling contact surface between the pressure relief gas and the hollow blades in the low-temperature state is increased, solving the problem of the initial temperature of the pressure relief gas being too high and the cooling effect being poor; the impact strength of the pressure relief gas can be reduced, and the adequacy of the adsorption filter plate impacting the side rotation for adsorption filtration is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of switch cabinets, and in particular to a switch cabinet pressure relief device. Background Art

[0002] Arc combustion produces a large amount of high-temperature and high-pressure gas. The instantaneous shock wave of the gas can cause the switch cabinet to deform and break. The shock wave blasting vibration can cause the switch cabinet to vibrate violently and loosen the fasteners at the joints. The high temperature generated can cause cable burning, copper busbar melting, aluminum exhaust, and even melt the metal of the switch cabinet shell, seriously damage components and cause fire. Therefore, corresponding pressure relief devices need to be installed in the switch cabinet production process to ensure that the high-temperature and high-pressure gas generated by arc combustion in the switch cabinet can be quickly released and decompressed.

[0003] The existing Chinese invention patent with application number CN202311327439.0 discloses a switch cabinet pressure relief device and a switch cabinet, including a switch cabinet housing and a pressure relief pipe, one end of the pressure relief pipe is connected to the inner cavity of the switch cabinet, and the other end of the pressure relief pipe is hinged with a sealing plate through a hinge, and the side of the sealing plate away from the hinge is fixedly connected to the pressure relief pipe through a nylon bolt, and a primary cooling unit and a secondary cooling unit are also provided on the switch cabinet housing; the primary cooling unit includes a first pipeline, and a first one-way valve is installed on the first pipeline, which can reduce the temperature of the gas discharged from the pressure relief pipe to the greatest extent, protecting the safety of the staff, and the structure will not have the risk of water leakage. At the same time, during the operation of the structure, even if the air pressure inside the switch cabinet is the same as the air pressure in the external environment, due to the continuous operation of the high-pressure air pump, the high-temperature gas inside the switch cabinet will also be quickly discharged to the outside of the switch cabinet, so as to achieve the purpose of protecting the internal components of the switch cabinet.

[0004] The above technical solution has the following defects: 1. It cannot reduce the impact strength of high-pressure and high-temperature gas to the greatest extent, resulting in a fast flow rate of high-pressure and high-temperature gas and a short heat exchange cooling time; 2. The buffer cavity is distributed with refrigeration components, and the water injected into the refrigeration components can cool down, but it cannot treat harmful substances in the high-pressure and high-temperature gas. After the gas is discharged, it pollutes the air environment of the external space; 3. The speed of injecting water into the refrigeration component cannot be synchronized with the pressure relief height, and is greatly affected by whether the high-pressure air pump connected to the injector is operating normally. Therefore, a switch cabinet pressure relief device is proposed to address the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a switch cabinet pressure relief device in order to solve the above-mentioned problem.

[0006] The present invention achieves the above-mentioned purpose through the following technical scheme: a switch cabinet pressure relief device, including a pressure relief pipe, a conduit, a cover plate, a round box, a pump body, a liquid storage tank, a lead-out pipe, a spray head, an adsorption filter plate, an input conduit and an output conduit, a lead-out pipe part is serpentinely distributed inside a rectangular hole on the pressure relief pipe, and each corresponding pipe body part of the lead-out pipe in the rectangular hole is connected and installed with a spray head, an adsorption filter plate is arranged between the corresponding pipe body parts of every two lead-out pipes in the rectangular hole, and the end grooves at the top of each adsorption filter plate are rotatably connected to the two ends of the corresponding strip block through a rotating shaft, and multiple groups of rotating shafts are all equipped with torsion springs of different strengths;

[0007] The circular box is connected to one side of the pressure-discharging pipe, and a plurality of hollow blades are distributed in an annular manner on the central axis portion inside the circular box. A liquid inlet pipe seat and a liquid outlet pipe seat are connected and installed on one side of each of the hollow blades. Each of the liquid inlet pipe seats is connected to the rear end space in the circular groove on the central axis, and the rear end space in the circular groove is connected to a port at one end of the input conduit through the liquid inlet channel. Each of the liquid outlet pipe seats is connected to the front end space in the circular groove on the central axis, and the front end hole in the circular groove is connected to a port at one end of the output conduit through the liquid outlet channel. The other end of the output conduit is connected to the input port of the pump body.

[0008] A large gear is installed at one end of the central shaft, and the large gear is meshed with a small gear. The small gear is assembled on the driving shaft end of the pump body. A plurality of hollow blades distributed in an annular shape form a driving structure with the central shaft through the high-flow air pressure introduced by the duct. A transfer shaft is rotatably installed in a circular groove at the other end face of the central shaft.

[0009] Preferably, the other end of the input conduit is communicated with the interior of a liquid storage tank located on the pressure-discharging pipe, and a corresponding surface of the liquid storage tank is fixedly connected to the pump body.

[0010] Preferably, the liquid inlet channel and the liquid outlet channel are respectively arranged on the adapter shaft, and both sides of the middle part of the adapter shaft are rotatably connected to the middle part of the circular groove through sealing bearings, and the notch of the circular groove is rotatably connected to the corresponding part of the adapter shaft through sealing bearings.

[0011] Preferably, one end of the liquid inlet pipe seat and the liquid outlet pipe seat of the same group are both connected and fixed on the central axis, and the liquid inlet pipe seat and the liquid outlet pipe seat are connected to each other through hollow blades.

[0012] Preferably, the central axis is rotatably connected to the middle parts of the end surfaces at both ends of the round box through bearings.

[0013] Preferably, one third of the hollow blades are positioned in the pressure-discharging pipe by rotation.

[0014] Preferably, the top of the strip block is fixedly connected to a corresponding portion of the bottom of the cover plate, and the cover plate is sealed and connected to an outer port of the rectangular hole.

[0015] Preferably, one end of the outlet pipe is connected to the output port of the pump body.

[0016] Preferably, a cabinet connecting plate is sealed on one end of the pressure-discharging pipe, and the cabinet connecting plate is fixedly connected to a corresponding port on an external switch cabinet.

[0017] Preferably, a port at one end of the conduit is located inside the pressure-discharging pipe, and a one-way valve is disposed on the conduit.

[0018] The beneficial effects of the present invention are:

[0019] 1. The liquid sprayed by the sprinkler head contacts the pressure relief gas flowing through, which can not only humidify the harmful gas and microparticles in the gas, but also further absorb heat and cool it down. At the same time, under the impact of the pressure relief gas and the multiple sets of torsion springs gradually strengthened from left to right, the multiple adsorption filter plates distributed are in different lateral rotation states, which increases the buffering capacity of the pressure relief gas, further deepens the adsorption of impurities in the pressure relief gas, realizes harmless pressure relief and drainage, and solves the problem of high pressure inside the switch cabinet and inconvenience in opening the cabinet;

[0020] Second, the low-temperature liquid flowing through the hollow blades increases the cooling contact surface between the pressure relief gas and the low-temperature hollow blades under the blowing and rotating action of the hollow blades, solving the problem of the initial temperature of the pressure relief gas being too high and the cooling effect being poor;

[0021] 3. Use the high flow rate pressure of the deflated gas to blow and rotate the hollow blades, so that the central shaft connected to the hollow blades and the large gear connected to the end of the central shaft rotate, further driving the small gear and the pump body connected to the small gear to rotate, which can reduce the impact strength of the depressurized gas and ensure the adequacy of the adsorption filter plate's impact side rotation for adsorption filtration. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0023] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0024] Figure 2 Another perspective view of the overall structure of the present invention;

[0025] Figure 3 It is a side view of the overall structure of the present invention;

[0026] Figure 4 It is a three-dimensional diagram of the local structure of the present invention;

[0027] Figure 5 It is a schematic diagram of the connection structure between the cover plate and the adsorption filter plate of the present invention;

[0028] Figure 6 for Figure 5 The enlarged view of point A in the middle;

[0029] Figure 7 It is a three-dimensional diagram of the round box connection structure of the present invention;

[0030] Figure 8 It is a schematic diagram of the connection structure between the central shaft and the transfer shaft of the present invention.

[0031] In the figure: 1. pressure-discharging pipe; 110. cabinet connecting plate; 120. rectangular hole; 2. conduit; 210. one-way valve; 3. cover plate; 310. strip block; 320. rotating shaft; 330. torsion spring; 4. round box; 410. middle axis; 411. liquid inlet pipe seat; 412. hollow blade; 413. liquid outlet pipe seat; 414. circular groove; 420. large gear; 430. adapter shaft; 431. liquid inlet channel; 432. liquid outlet channel; 5. pump body; 510. small gear; 6. liquid storage tank; 7. outlet pipe; 8. sprinkler head; 9. adsorption filter plate; 910. end groove; 10. input conduit; 11. output conduit. DETAILED DESCRIPTION

[0032] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0034] In the description of the present invention, it is necessary to understand that the orientations or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] See also Figure 1-8 As shown, a switch cabinet pressure relief device includes a pressure relief pipe 1, a conduit 2, a cover plate 3, a round box 4, a pump body 5, a liquid storage tank 6, a lead-out pipe 7, a spray head 8, an adsorption filter plate 9, an input conduit 10 and an output conduit 11, the inner side of the rectangular hole 120 on the pressure relief pipe 1 is provided with a lead-out pipe 7 portion serpentinely distributed, the other end of the input conduit 10 is communicated with the inside of the liquid storage tank 6 on the pressure relief pipe 1, and the corresponding surface of the liquid storage tank 6 is fixedly connected with the pump body 5, one end of the lead-out pipe 7 is connected with the output port of the pump body 5, and the other end of the output conduit 11 is connected with the input port of the pump body 5;

[0036] By running the pump body 5 , the liquid in the liquid storage tank 6 first flows into the hollow blades 412 and then flows into the spray head 8 for spraying. The liquid in the liquid storage tank 6 is not limited to one type.

[0037] The corresponding pipe body part of each outlet pipe 7 in the rectangular hole 120 is connected to a spray head 8, and an adsorption filter plate 9 is provided between the corresponding pipe body parts of each two outlet pipes 7 in the rectangular hole 120, and the end groove 910 located at the top of each adsorption filter plate 9 is rotatably connected to the two ends of the corresponding strip block 310 through a rotating shaft 320, and multiple groups of rotating shafts 320 are equipped with torsion springs 330 of different strengths;

[0038] The liquid sprayed by the spray head 8 comes into contact with the depressurized gas flowing through, which can not only humidify the harmful gases and microparticles in the gas, but also further absorb heat and cool it down. At the same time, under the impact of the depressurized gas and the multiple groups of torsion springs 330 that are gradually strengthened from left to right, the distributed multiple adsorption filter plates 9 are in different lateral rotation states, which increases the buffering capacity of the depressurized gas, further deepens the adsorption of impurities in the depressurized gas, and realizes harmless pressure relief and drainage.

[0039] The circular box 4 is connected to one side of the pressure-discharging pipe 1, and a plurality of hollow blades 412 are distributed in an annular manner on the central axis 410 located inside the circular box 4, and a liquid inlet pipe seat 411 and a liquid outlet pipe seat 413 are connected and installed on one side of each of the hollow blades 412, and each of the liquid inlet pipe seats 411 is connected to the rear end space in the circular groove 414 located on the central axis 410, and the rear end space in the circular groove 414 is connected to one end of the input conduit 10 through the liquid inlet channel 431, and each of the liquid outlet pipe seats 413 is connected to the front end space in the circular groove 414 located on the central axis 410, and the front end hole in the circular groove 414 is connected to one end of the output conduit 11 through the liquid outlet channel 432;

[0040] Under the operation of the pump body 5, the low-temperature liquid flows through the multiple hollow blades 412 and is blown and rotated by the hollow blades 412, which increases the cooling contact surface between the pressure relief gas and the hollow blades 412 in a low-temperature state, thereby solving the problem of the initial temperature of the pressure relief gas being too high and the cooling effect being poor.

[0041] A large gear 420 is installed at one end of the central shaft 410, and the large gear 420 is meshed with a small gear 510, and the small gear 510 is assembled on the driving shaft end of the pump body 5. A plurality of hollow blades 412 distributed in an annular manner form a driving structure with the central shaft 410 through the high flow rate air pressure introduced by the conduit 2. One third of the hollow blades 412 are located in the pressure discharge pipe 1 by rotation, and a transfer shaft 430 is rotatably installed in the circular groove 414 located at the other end surface of the central shaft 410;

[0042] The high flow rate pressure of the deflated gas is used to blow and rotate the hollow blade 412, so that the central shaft 410 connected to the hollow blade 412 and the large gear 420 connected to the end of the central shaft 410 rotate, further driving the small gear 510 and the pump body 5 connected to the small gear 510 to rotate, which can convert and reduce the impact strength of the depressurized gas and ensure the adequacy of the adsorption filter plate 9 to impact and rotate sideways for adsorption and filtration.

[0043] The liquid inlet channel 431 and the liquid outlet channel 432 are respectively arranged on the adapter shaft 430, and both sides of the middle part of the adapter shaft 430 are rotatably connected with the middle part of the circular groove 414 through sealed bearings. The notch of the circular groove 414 is rotatably connected with the corresponding part of the adapter shaft 430 through sealed bearings. The sealed bearings distributed at various places on the adapter shaft 430 are placed at the corresponding parts in the circular groove 414, thereby forming two independent liquid circulation spaces, so as to form a liquid inlet and outlet structure with the hollow blades 412.

[0044] One end of the liquid inlet pipe seat 411 and the liquid outlet pipe seat 413 of the same group are connected and fixed on the central axis 410, and the liquid inlet pipe seat 411 and the liquid outlet pipe seat 413 are connected to each other through the hollow blades 412, so that the liquid first enters from the inside of the hollow blades 412 and then diffuses and flows out.

[0045] The central axis 410 is rotatably connected to the middle of the end surfaces at both ends of the round box 4 through bearings, thereby ensuring the rotatability of the central axis 410.

[0046] The top of the strip block 310 is fixedly connected to the corresponding part of the bottom of the cover plate 3, and the cover plate 3 is sealed and connected to the outer end of the rectangular hole 120, so as to seal the rectangular hole 120 and can be disassembled.

[0047] A cabinet connecting plate 110 is sealed and installed at one end of the pressure-discharging pipe 1, and the cabinet connecting plate 110 is fixedly connected to a corresponding port on an external switch cabinet so that the whole is installed on the switch cabinet.

[0048] One end of the conduit 2 is located inside the pressure relief pipe 1 , and a one-way valve 210 is disposed on the conduit 2 , which prevents substances inside the pressure relief pipe 1 from entering the switch cabinet along the conduit 2 .

[0049] Working principle: When the high-pressure gas inside the switch cabinet enters the pressure-discharging pipe 1 along the conduit 2, the airflow of the high-pressure gas blows the hollow blade 412 to rotate, so that the central axis 410 connected to the hollow blade 412 rotates, and further drives the large gear 420 located at the end of the central axis 410 and the small gear 510 meshing with the large gear 420 to rotate together, and finally achieves the effect of driving the pump body 5 to operate, and realizes the output flow of the liquid inside the liquid storage tank 6. The output flowing liquid first flows through the hollow blade 412 and then flows to the spray head 8 to be sprayed out. The sprayed liquid contacts the pressure-relief gas flowing through the internal space of the pressure-relief pipe 1 where the spray head 8 is located. At the same time, under the impact of the pressure-relief gas, multiple adsorption filter plates 9 are in different degrees of side rotation, which plays a role in buffering and adsorbing impurities in the gas.

[0050] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations within the meaning and scope of the elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0051] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A switch cabinet pressure relief device, characterized in that: It comprises a pressure-discharging pipe (1), a conduit (2), a cover plate (3), a round box (4), a pump body (5), a liquid storage box (6), an outlet pipe (7), a spray head (8), an adsorption filter plate (9), an input conduit (10) and an output conduit (11); the outlet pipe (7) portion is serpentinely distributed inside a rectangular hole (120) on the pressure-discharging pipe (1); the corresponding pipe body portion of each outlet pipe (7) located in the rectangular hole (120) is connected to the spray head (8); an adsorption filter plate (9) is provided between the corresponding pipe body portions of every two outlet pipes (7) located in the rectangular hole (120); the end groove (910) located at the top of each adsorption filter plate (9) is rotatably connected to the two ends of the corresponding strip block (310) via a rotating shaft (320); and the plurality of rotating shafts (320) are each provided with torsion springs (330) of different strengths; The circular box (4) is connected to one side of the pressure-discharging pipe (1), and a plurality of hollow blades (412) are distributed in an annular manner on the middle axis (410) inside the circular box (4). One side of each of the hollow blades (412) is connected and installed with a liquid inlet pipe seat (411) and a liquid outlet pipe seat (413). Each of the liquid inlet pipe seats (411) is connected to a rear end space in a circular groove (414) located on the middle axis (410), and the rear end space in the circular groove (414) is connected to a port at one end of the input conduit (10) through a liquid inlet channel (431). Each of the liquid outlet pipe seats (413) is connected to a front end space in a circular groove (414) located on the middle axis (410), and the front end hole in the circular groove (414) is connected to a port at one end of the output conduit (11) through a liquid outlet channel (432). The other end of the output conduit (11) is connected to the input port of the pump body (5). A large gear (420) is mounted on one end of the central shaft (410), and the large gear (420) is meshingly connected with a small gear (510). The small gear (510) is mounted on the end of the drive shaft of the pump body (5). A plurality of hollow blades (412) distributed in an annular pattern form a driving structure with the central shaft (410) through high-flow air pressure introduced through the conduit (2). A transfer shaft (430) is rotatably mounted in a circular groove (414) located at the other end surface of the central shaft (410).

2. A switch cabinet pressure relief device according to claim 1, characterized in that: The other end of the input conduit (10) is in communication with the interior of a liquid storage tank (6) located on the pressure-discharging pipe (1), and a corresponding surface of the liquid storage tank (6) is fixedly connected to the pump body (5).

3. A switch cabinet pressure relief device according to claim 1, characterized in that: The liquid inlet channel (431) and the liquid outlet channel (432) are respectively arranged on the adapter shaft (430), and both sides of the middle part of the adapter shaft (430) are rotatably connected to the middle part of the circular groove (414) through sealing bearings, and the notch of the circular groove (414) is rotatably connected to the corresponding part of the adapter shaft (430) through sealing bearings.

4. A switch cabinet pressure relief device according to claim 1, characterized in that: One end of the liquid inlet pipe seat (411) and the liquid outlet pipe seat (413) of the same group are both connected and fixed on the central axis (410), and the liquid inlet pipe seat (411) and the liquid outlet pipe seat (413) are connected to each other via the hollow blade (412).

5. A switch cabinet pressure relief device according to claim 1, characterized in that: The central shaft (410) is rotatably connected to the middle parts of the end surfaces at both ends of the round box (4) through bearings.

6. A switch cabinet pressure relief device according to claim 1, characterized in that: One third of the hollow blade (412) is located in the pressure-discharging pipe (1) through rotation.

7. A switch cabinet pressure relief device according to claim 1, characterized in that: The top of the strip block (310) is fixedly connected to a corresponding portion of the bottom of the cover plate (3), and the cover plate (3) is sealed and connected to an outer port of the rectangular hole (120).

8. The switch cabinet pressure relief device according to claim 1, characterized in that: One end of the outlet pipe (7) is connected to the output port of the pump body (5).

9. A switch cabinet pressure relief device according to claim 1, characterized in that: A cabinet connection plate (110) is sealed and mounted on one end of the pressure-discharging pipe (1), and the cabinet connection plate (110) is fixedly connected to a corresponding port on an external switch cabinet.

10. A switch cabinet pressure relief device according to claim 1, characterized in that: One end port of the conduit (2) is located inside the pressure-discharging pipe (1), and a one-way valve (210) is arranged on the conduit (2).

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