Inflation compartment capable of automatically breathing and regulating pressure

Abstract

The invention relates to the technical field of inflatable compartments, in particular to an inflatable compartment capable of automatically breathing and regulating pressure. Comprising a housing; the partition plate is connected to the inner wall of the shell and divides the internal space of the shell into a circuit breaker chamber and an installation chamber, vent holes are evenly formed in the bottom of the installation chamber at intervals so that the interior of the installation chamber can be communicated with the external space through the vent holes, and a round hole is further formed in the partition plate so that the interior of the circuit breaker chamber can be communicated with the interior of the installation chamber through the round hole. Through the cooperation of the lifting plate and the monitoring assembly, when the volume of the insulating gas expands or contracts due to temperature change, the change of the air pressure in the circuit breaker chamber can be accurately sensed, and the position of the lifting plate is adjusted through the lifting assembly, so that the stability of the air pressure in the circuit breaker chamber can be kept; safe operation of equipment under various environmental conditions is ensured, the electrical fault risk caused by unstable air pressure can be effectively prevented, and dependence on a complex and high-cost temperature control system is not needed.

Description

Technical Field

[0001] The present invention relates to the technical field of inflatable compartments, and in particular, to an inflatable compartment with automatic breathing and pressure regulation. Background Art

[0002] With the continuous progress of the power system, as one of the key equipment, gas-insulated switchgear plays a crucial role in ensuring the safe and stable operation of the power grid. Such equipment is usually filled with highly insulating gases such as SF6 inside to enhance the insulation performance of electrical equipment, thereby ensuring its safe and reliable operation.

[0003] The internal air pressure of the existing gas-insulated switchgear is preset during the production process and is generally slightly higher than the standard atmospheric pressure to provide necessary insulation protection. Although this fixed air pressure setting can meet the basic requirements of the equipment to a certain extent, it fails to fully consider the impact of external environmental changes on the internal air pressure. In particular, the change in the external environmental temperature has a direct impact on the internal pressure of the GIS. According to the ideal gas state equation, when the temperature rises, the volume of the gas will expand, and conversely, when the temperature drops, the volume of the gas will contract. This means that even under a constant atmospheric pressure, seasonal or diurnal changes in temperature will cause changes in the volume of the insulating gas inside the cabinet, thereby leading to fluctuations in the internal pressure. This pressure instability may not only affect the normal operation of the equipment but also cause a decline in the insulation performance and increase the risk of electrical failures.

[0004] To address the problem of internal air pressure fluctuations caused by temperature changes, the current approach is to additionally equip a complex temperature control system inside the gas-insulated switchgear. The purpose of this system design is to maintain the internal temperature of the GIS within a relatively stable range, thereby indirectly maintaining the stability of the internal air pressure. However, such a temperature control system will increase the cost and complexity of the equipment. The installation and maintenance of the temperature control system require professional knowledge and technology, which will pose higher requirements for the operation and maintenance personnel. Moreover, the temperature control system itself also has potential failure risks. Once a problem occurs, it may further affect the normal operation of the gas-insulated switchgear and even pose a safety hazard. Summary of the Invention

[0005] In view of this, the present invention provides an inflatable compartment with automatic breathing and pressure regulation, which can overcome the disadvantages of the existing gas-insulated switchgear that requires the installation of a temperature control system inside to maintain the stability of the internal air pressure, not only with a relatively high cost, but also with higher requirements for installation and maintenance, and is prone to failures and pose safety hazards.

[0006] The technical solution of the present invention is: an inflatable compartment with automatic breathing pressure regulation, including: a housing; a partition connected to the inner wall of the housing, dividing the inner space of the housing into two parts, namely a circuit breaker chamber and an installation chamber. The bottom of the installation chamber is evenly spaced with ventilation holes, so that the inside of the installation chamber can communicate with the external space through the ventilation holes. There is also a round hole on the partition, so that the inside of the circuit breaker chamber can communicate with the inside of the installation chamber through the round hole; a lifting plate slidably arranged in the installation chamber, and the ventilation holes and the round hole are respectively located on the upper and lower sides of the lifting plate. The side surface of the lifting plate contacts the inner wall of the installation chamber to divide the inner space of the installation chamber into upper and lower parts; a lifting assembly arranged in the installation chamber for driving the lifting plate to lift; a monitoring assembly arranged in the installation chamber for monitoring the air pressure of the insulating gas inside the circuit breaker chamber.

[0007] Further, the lifting assembly includes: a driving motor symmetrically installed on the side surface of the partition, and the driving motor is located inside the installation chamber; a lead screw connected to the output shaft of the driving motor; a threaded sleeve symmetrically connected to the lifting plate, and the threaded sleeve is threadedly connected to the lead screw.

[0008] Further, the monitoring assembly includes: a controller installed at the bottom of the lifting plate; a mounting bracket connected to the middle of the lifting plate; pressure sensors symmetrically connected to the mounting bracket; a rubber membrane connected to the middle of the lifting plate, and the rubber membrane is located between the two pressure sensors; top beads respectively connected to the top and bottom of the rubber membrane, and the top beads are in contact and cooperation with the pressure sensors.

[0009] Further, it also includes: a top block connected to the side surface of the housing, and the top block is located inside the installation chamber; a contact switch installed on the side surface of the lifting plate, and the contact switch is in contact and cooperation with the top block; an alarm installed on the lifting plate.

[0010] Further, it also includes a storage mechanism. The storage mechanism includes: first connecting plates symmetrically connected to the bottom of the lifting plate; gas storage tanks connected to the first connecting plates at intervals; connecting pipes connected between adjacent gas storage tanks and kept in communication; an air extraction assembly arranged on the lifting plate for extracting the insulating gas in the circuit breaker chamber and transporting the insulating gas into the gas storage tanks for storage.

[0011] Further, the air extraction assembly includes: a second connecting plate connected to the bottom of the lifting plate; an air extraction pump installed on the second connecting plate; an air extraction pipe connected to the lifting plate, and the end of the air extraction pipe is communicated with the air inlet of the air extraction pump; an air outlet pipe, one end of which is communicated with the air outlet of the air extraction pump, and the other end is connected to one of the gas storage tanks and kept in communication.

[0012] Further, it also includes: a connecting ring connected to the inner wall of the ventilation hole; a filter screen connected to the inner wall of the connecting ring.

[0013] Further, it also includes: a rubber sleeve, which is connected to the lifting plate, and the outer wall of the rubber sleeve is in contact and fit with the inner wall of the installation chamber.

[0014] The beneficial effects are as follows: 1. Through the cooperation of the lifting plate and the monitoring component, the present invention can accurately sense the change in the internal air pressure of the circuit breaker chamber when the volume of the insulating gas expands or contracts due to temperature changes, and adjust the position of the lifting plate through the lifting component, so as to maintain the stability of the internal air pressure of the circuit breaker chamber, ensure the safe operation of the equipment under various environmental conditions, and effectively prevent the risk of electrical faults caused by unstable air pressure, without relying on a complex and costly temperature control system.

[0015] 2. Through the cooperation of the top block, the contact switch and the alarm, when there is a leakage of the insulating gas inside the circuit breaker chamber, the contact switch will trigger the alarm to emit an alarm sound, reminding the staff to deal with the problem in time. This mechanism can not only effectively prevent potential dangers that may be caused by gas leakage, but also greatly improve the self-protection ability and operation safety of the system.

[0016] 3. Through the function of the storage mechanism, when detecting a leakage of the insulating gas or other situations that require maintenance, the air extraction pump can extract the remaining gas in the circuit breaker chamber through the air extraction pipe and transport it to the gas storage tank for storage through the air outlet pipe. This design can not only avoid the waste of precious SF6 gas resources, support environmental protection, but also provide convenient conditions for subsequent gas reuse, reduce operating costs, reflecting the dual advantages of economy and environmental protection. In addition, the application of the filter screen can ensure the air quality entering the installation chamber and prevent impurities from affecting the system sealing performance and overall performance. Description of the Drawings

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0018] Figure 2 It is an installation schematic diagram of the partition board of the present invention.

[0019] Figure 3 It is an installation schematic diagram of the lifting plate and the lifting component of the present invention.

[0020] Figure 4 It is an installation schematic diagram of the monitoring component of the present invention.

[0021] Figure 5 It is a specific structural schematic diagram of the rubber membrane and the top bead of the present invention.

[0022] Figure 6 It is a specific structural schematic diagram of the monitoring component of the present invention.

[0023] Figure 7 It is an installation schematic diagram of the top block, the contact switch and the alarm of the present invention.

[0024] Figure 8 This is the installation schematic diagram of the storage mechanism of the present invention.

[0025] Figure 9 This is the installation schematic diagram of the connecting ring of the present invention.

[0026] Figure 10 This is the specific structural schematic diagram of the connecting ring and the filter net of the present invention.

[0027] Figure 11 This is the installation schematic diagram of the rubber sleeve of the present invention.

[0028] Names and serial numbers of components in the figure: 1 - outer shell, 2 - partition board, 3 - circuit breaker chamber, 4 - installation chamber, 5 - ventilation hole, 6 - round hole, 7 - lifting plate, 8 - driving motor, 9 - lead screw, 10 - threaded sleeve, 11 - controller, 12 - mounting rack, 13 - pressure sensor, 14 - rubber membrane, 15 - top bead, 16 - top block, 17 - contact switch, 18 - alarm, 19 - first connecting plate, 20 - gas storage tank, 21 - connecting pipe, 22 - second connecting plate, 23 - air extraction pump, 24 - air extraction pipe, 25 - air outlet pipe, 26 - connecting ring, 27 - filter net, 28 - rubber sleeve. Detailed implementation manners

[0029] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is 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 should not be construed as a limitation to the present invention.

[0031] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] Embodiment: An inflatable compartment with automatic breathing pressure regulation, as Figures 1-6 shown, includes a housing 1, a partition 2, a lifting plate 7, a lifting assembly and a monitoring assembly. On the left side inside the housing 1, there is a connected partition 2. The partition 2 divides the internal space of the housing 1 into two parts: a circuit breaker chamber 3 and an installation chamber 4. The circuit breaker chamber 3 is located on the right side of the partition 2, and the circuit breaker assembly is installed inside the circuit breaker chamber 3. The installation chamber 4 is located on the left side of the partition 2. On the left side of the bottom of the housing 1, three ventilation holes 5 are evenly spaced. In the middle of the upper part of the partition 2, there is a circular hole 6. A lifting plate 7 is slidably arranged in the installation chamber 4. The ventilation holes 5 are located below the lifting plate 7, and the circular hole 6 is located above the lifting plate 7. The front, rear, left and right sides of the lifting plate 7 are all in contact with the inner wall of the installation chamber 4, so as to divide the internal space of the installation chamber 4 into upper and lower parts. The space in the installation chamber 4 below the lifting plate 7 can communicate with the external space through the ventilation holes 5, and the space in the installation chamber 4 above the lifting plate 7 can communicate with the inside of the installation chamber 4 through the circular hole 6. The lifting assembly is used to drive the lifting plate 7 to lift, so as to adjust the air pressure of the insulating gas inside the circuit breaker chamber 3. The monitoring assembly is used to monitor the air pressure of the insulating gas inside the circuit breaker chamber 3.

[0034] As Figure 3 shown, the lifting assembly includes a driving motor 8, a lead screw 9 and a threaded sleeve 10. The driving motors 8 are symmetrically installed at the front and rear of the lower part on the left side of the partition 2. The output shafts of the two driving motors 8 are both connected with a lead screw 9. The upper end of the lead screw 9 is rotationally connected to the upper part of the housing 1. The threaded sleeves 10 are symmetrically connected to the front and rear of the lifting plate 7, and the two threaded sleeves 10 are respectively threadedly connected to the two lead screws 9.

[0035] As Figures 4-6 shown, the monitoring assembly includes a controller 11, a mounting bracket 12, a pressure sensor 13, a rubber membrane 14 and a top bead 15. The controller 11 is installed on the front side of the bottom of the lifting plate 7. The middle part of the lifting plate 7 is connected with a mounting bracket 12. The pressure sensors 13 are installed on both the upper and lower sides of the mounting bracket 12. The middle part of the lifting plate 7 is also connected with a rubber membrane 14, and the rubber membrane 14 is located between the upper and lower pressure sensors 13. The middle of the top and bottom of the rubber membrane 14 are both connected with a top bead 15, and the two top beads 15 are respectively in contact with the two pressure sensors 13.

[0036] In the initial state, the circuit breaker chamber 3 is filled with an appropriate amount of insulating gas, and the space in the installation chamber 4 above the lifting plate 7 is also filled with an appropriate amount of insulating gas. The rubber membrane 14 is in a concave state (as Figure 6As shown in the figure, two top beads 15 are respectively in contact with two pressure sensors 13, and the initial pressure monitored by the pressure sensors 13 is zero. When the insulating gas in the circuit breaker chamber 3 expands due to temperature rise, the air pressure of the insulating gas in the circuit breaker chamber 3 will increase, and the insulating gas in the circuit breaker chamber 3 will reach above the lifting plate 7 through the round hole 6, thereby exerting a downward force on the rubber membrane 14. The rubber membrane 14 can apply the force it receives to the lower pressure sensor 13 through the lower top bead 15. The lower pressure sensor 13 sends a signal. After receiving the signal, the controller 11 will control the driving motor 8 to drive the lead screw 9 to reverse. The reverse rotation of the lead screw 9 can drive the threaded sleeve 10 to move downward, thereby increasing the space above the lifting plate 7, and further reducing the air pressure of the insulating gas inside the circuit breaker chamber 3. Until the pressure monitored by the lower pressure sensor 13 is zero, the lower pressure sensor 13 will send a signal. After receiving the signal, the controller 11 will control the driving motor 8 to stop working. When the insulating gas in the circuit breaker chamber 3 contracts due to temperature drop, the air pressure of the insulating gas in the circuit breaker chamber 3 will decrease, and the outside air will enter the installation chamber 4 through the ventilation hole 5 and exert an upward force on the rubber membrane 14. The rubber membrane 14 can apply the force it receives to the upper pressure sensor 13 through the upper top bead 15, making the pressure monitored by the upper pressure sensor 13 greater than zero. At this time, the upper pressure sensor 13 will send a signal. After receiving the signal, the controller 11 will control the driving motor 8 to drive the lead screw 9 to rotate forward. The forward rotation of the lead screw 9 can drive the threaded sleeve 10 to move upward, thereby driving the lifting plate 7 to move upward. The lifting plate 7 will squeeze the insulating gas in the installation chamber 4 to enter the circuit breaker chamber 3 through the round hole 6, thereby increasing the air pressure of the insulating gas inside the circuit breaker chamber 3. Until the pressure monitored by the upper pressure sensor 13 is zero, the upper pressure sensor 13 will send a signal. After receiving the signal, the controller 11 will control the driving motor 8 to stop working. In this way, the air pressure of the insulating gas inside the circuit breaker chamber 3 can be maintained constant, ensuring the pressure stability and insulation performance of the insulating gas.

[0037] As Figure 7 shown, it further includes a top block 16, a contact switch 17 and an alarm 18. The upper left part of the inner wall of the housing 1 is connected with the top block 16, and the top block 16 is located inside the installation chamber 4. The contact switch 17 is installed at the rear left part of the lifting plate 7. The contact switch 17 can be in contact with the top block 16 as the lifting plate 7 rises. The alarm 18 is installed at the rear of the bottom of the lifting plate 7. When the insulating gas inside the circuit breaker chamber 3 leaks, the air pressure of the insulating gas inside the circuit breaker chamber 3 will gradually decrease. At this time, the lifting plate 7 will continue to rise, driving the contact switch 17 to move upward continuously. When the contact switch 17 is in contact with the top block 16, the top block 16 will press the contact switch 17, causing the contact switch 17 to send a signal. After receiving the signal, the controller 11 will control the alarm 18 to continuously emit an alarm sound, thereby reminding the staff to deal with the leakage problem in time.

[0038] As shown Figure 8 in the figure, it further includes a storage mechanism, which includes a first connecting plate 19, a gas storage tank 20, a connecting pipe 21 and an air extraction component. Two first connecting plates 19 are connected to the front side of the bottom of the lifting plate 7. Three gas storage tanks 20 are evenly spaced and connected between the two first connecting plates 19. And adjacent two gas storage tanks 20 are connected with a connecting pipe 21 and kept in communication. The air extraction component is used to extract the insulating gas in the circuit breaker chamber 3 and transport the insulating gas to the inside of the gas storage tank 20 for storage; the air extraction component includes a second connecting plate 22, an air extraction pump 23, an air extraction pipe 24 and an air outlet pipe 25. The second connecting plate 22 is connected to the rear side of the bottom of the lifting plate 7. The air extraction pump 23 is installed on the upper part of the front side of the second connecting plate 22. An air extraction pipe 24 is connected to the lifting plate 7. The upper end of the air extraction pipe 24 is higher than the top of the lifting plate 7, and the lower end of the air extraction pipe 24 is communicated with the air inlet of the air extraction pump 23. An air outlet pipe 25 is connected to the air outlet of the air extraction pump 23, and the front end of the air outlet pipe 25 is connected to the rear side of the middle gas storage tank 20 and kept in communication.

[0039] When the insulating gas in the circuit breaker chamber 3 leaks, the controller 11 will control the air extraction pump 23 to start working. The air extraction pump 23 can extract the insulating gas in the circuit breaker chamber 3 through the air extraction pipe 24 and transport the insulating gas to each gas storage tank 20 for storage through the air outlet pipe 25, so as to prevent the waste of the insulating gas and enable the insulating gas to be reused. Moreover, SF6 is a powerful greenhouse gas. If the insulating gas is SF6, the storage function can also prevent SF6 from being discharged into the air.

[0040] As shown Figures 9-11 in the figure, it further includes a connecting ring 26, a filter screen 27 and a rubber sleeve 28. The inner walls of the three connecting rings 26 are all connected with a connecting ring 26. A filter screen 27 is connected in each connecting ring 26. A rubber sleeve 28 is also sleeved on the lifting plate 7, and the outer wall of the rubber sleeve 28 is in contact with the inner wall of the installation chamber 4, playing a sealing role; the filter screen 27 can filter the air entering the inside of the installation chamber 4, which can not only ensure the cleanliness of the installation chamber 4, but also prevent impurities from affecting the sealing performance of the rubber sleeve 28.

[0041] The above has introduced the present application in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. An inflatable compartment with automatic breathing and pressure regulation, comprising: a housing (1); characterized in that: The invention also comprises: a partition (2) connected to the inner wall of the housing (1) and dividing the inner space of the housing (1) into two parts, namely, a circuit breaker chamber (3) and an installation chamber (4); vent holes (5) are evenly spaced at the bottom of the installation chamber (4) so ​​that the inside of the installation chamber (4) can communicate with the outside space through the vent holes (5); a circular hole (6) is also opened on the partition (2) so that the inside of the circuit breaker chamber (3) can communicate with the inside of the installation chamber (4) through the circular hole (6); a lifting plate (7) slidably arranged in the installation chamber (4); the vent holes (5) and the circular hole (6) are respectively located on the upper and lower sides of the lifting plate (7); the side surface of the lifting plate (7) contacts the inner wall of the installation chamber (4) so ​​as to divide the inner space of the installation chamber (4) into two parts, namely, an upper and lower part; a lifting assembly arranged in the installation chamber (4) and used for driving the lifting plate (7) to lift and lower; and a monitoring assembly arranged in the installation chamber (4) and used for monitoring the pressure of the insulating gas in the circuit breaker chamber (3).

2. An automatic breathing pressure regulating inflatable compartment according to claim 1, characterized in that: The lifting assembly comprises: a driving motor (8) symmetrically mounted on a side of the partition (2), and the driving motor (8) is located in the mounting chamber (4); The screw rod (9) is connected to the output shaft of the driving motor (8); the threaded sleeve (10) is symmetrically connected to the lifting plate (7), and the threaded sleeve (10) is threadedly connected to the screw rod (9).

3. An automatic breathing pressure regulating inflatable compartment according to claim 2, characterized in that: The monitoring component comprises: a controller (11) mounted on the bottom of the lifting plate (7); a mounting frame (12) connected to the middle of the lifting plate (7); a pressure sensor (13) symmetrically connected to the mounting frame (12); a rubber membrane (14) connected to the middle of the lifting plate (7), and the rubber membrane (14) is located between two pressure sensors (13); and a top bead (15) respectively connected to the top and bottom of the rubber membrane (14), and the top bead (15) is in contact with the pressure sensor (13).

4. The inflatable compartment with automatic breathing and pressure regulation according to claim 3 is characterized in that: The device also includes: a top block (16) connected to the side of the housing (1), and the top block (16) is located in the installation chamber (4); a contact switch (17) installed on the side of the lifting plate (7), and the contact switch (17) is in contact with the top block (16); and an alarm (18) installed on the lifting plate (7).

5. An automatic breathing and pressure-regulating inflatable compartment according to claim 4, characterized in that: It also includes a storage mechanism, which includes: a first connecting plate (19) symmetrically connected to the bottom of the lifting plate (7); a gas storage tank (20) connected to the first connecting plate (19) at intervals; a connecting pipe (21) connected between two adjacent gas storage tanks (20) and maintained in communication; and a gas extraction component arranged on the lifting plate (7) and used to extract the insulating gas in the circuit breaker chamber (3) and transport the insulating gas to the inside of the gas storage tank (20) for storage.

6. An automatic breathing and pressure-regulating inflatable compartment according to claim 5, characterized in that: The air extraction assembly comprises: a second connecting plate (22) connected to the bottom of the lifting plate (7); an air extraction pump (23) mounted on the second connecting plate (22); an air extraction pipe (24) connected to the lifting plate (7), and an end of the air extraction pipe (24) is connected to an air inlet of the air extraction pump (23); and an air outlet pipe (25) having one end connected to the air outlet of the air extraction pump (23) and the other end connected to and maintained in communication with one of the air storage tanks (20).

7. An automatic breathing and pressure-regulating inflatable compartment according to claim 6, characterized in that: It also includes: a connecting ring (26) connected to the inner wall of the vent hole (5); and a filter screen (27) connected to the inner wall of the connecting ring (26).

8. An automatic breathing and pressure-regulating inflatable compartment according to claim 7, characterized in that: It also includes a rubber sleeve (28) connected to the lifting plate (7), and the outer wall of the rubber sleeve (28) is in contact with and fits with the inner wall of the installation chamber (4).

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