High-vibration-resistance gas density relay and gas channel communication assembly thereof

Abstract

The utility model relates to a high-vibration-resistance gas density relay and an air passage communicating assembly thereof, and the air passage communicating assembly of the high-vibration-resistance gas density relay utilizes a connecting air passage in a connecting base to directly communicate an inner cavity of a Bourdon tube with an inner cavity of a first corrugated tube. Therefore, the air leakage risk caused by connection through a capillary tube is avoided, and especially in a high-vibration environment, the air leakage risk caused by breakage of the capillary tube is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of high anti-vibration gas density relay and its air passage communication subassembly, belong to gas density monitoring field. BACKGROUND

[0002] In recent years, with the rapid development of China's economy, sulfur hexafluoride electrical equipment has been widely used in power system and industrial and mining enterprises, greatly promoting the progress of the power industry. As a key component of these devices, the sulfur hexafluoride gas density relay is mainly used to monitor the change of sulfur hexafluoride gas density, and its performance is directly related to the safe and reliable operation of the equipment.

[0003] Currently, the industry generally uses mechanical pointer type sulfur hexafluoride gas density relay. This density relay can send alarm and lockout signals when sulfur hexafluoride electrical equipment leaks, thereby ensuring the safe operation of the equipment. Its display part usually uses a C-shaped tube (also known as a Baratron tube) as a pressure measuring element, and a bimetallic strip as a compensation element. The contact part uses a bellows as a pressure measuring element, and a relative cavity as a compensation element. This design makes the contacts of the density relay have good electrical performance and ideal anti-vibration ability. However, since the air path between the Baratron tube of the display device and the inflation joint is connected by a capillary tube, the capillary tube is prone to breakage during assembly and field use, causing gas leakage, triggering alarm and lockout signals, and affecting the normal operation of the system. Especially during the opening / closing operation of some sulfur hexafluoride circuit breakers, the large impact force may further exacerbate the damage to the capillary tube. Therefore, its anti-vibration performance is still not ideal, and it is difficult to completely ensure the reliable operation of the power grid system. SUMMARY

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present utility model is to provide a high anti-vibration gas density relay and its air passage communication subassembly, which can reliably connect the chambers of the relevant gas pressure elements of the gas density relay and is not easily affected by vibration to leak.

[0005] To achieve the above-mentioned purpose, the utility model provides an air passage communication subassembly of a high anti-vibration gas density relay, which includes a first chamber and a second chamber. The first chamber is used to accommodate the installation of a Baratron tube and a pointer mechanism, and the second chamber is used to accommodate the installation of a first bellows, a second bellows and a microswitch. The air passage communication subassembly includes an end cap base, a connecting base and a bellows base. The end cap base separates the first chamber and the second chamber. The connecting base and the bellows base are located in the second chamber, and the connecting base is connected with the end cap base and the bellows base. The first bellows is installed on the bellows base and communicates with the air passage of the bellows in the bellows base.

[0006] The connecting base is internally provided with a connecting air channel, one end of the connecting air channel is communicated with the inner cavity of the baratron tube, the other end of the connecting air channel is communicated with the air channel of the bellows, the connecting base is provided with an inflation connector, the inflation connector is communicated with the connecting air channel, and the inflation connector is communicated with the insulating air chamber of the electrical equipment.

[0007] Preferably, the end cover base is provided with a first connecting hole, the left end of the connecting base is provided with a first connecting head, the first connecting head is sealingly inserted into the first connecting hole, and the air inlet end of the baratron tube is sealingly connected to the first connecting head.

[0008] More preferably, the bellows base is provided with a second connecting hole, and the right end of the connecting base is provided with a second connecting head, and the second connecting head is sealingly inserted into the second connecting hole.

[0009] More preferably, the connecting base is further provided with an inflation connecting hole, and the inflation connector is sealingly inserted into the inflation connecting hole.

[0010] More preferably, the right end of the connecting base is provided with a third connecting hole, the bellows base is provided with a third connecting head, and the third connecting head is sealingly inserted into the third connecting hole.

[0011] Further, the bellows base is further provided with an inflation connecting hole, and the inflation connector is sealingly inserted into the inflation connecting hole.

[0012] Preferably, the upper side of the middle part of the connecting base is provided with a fourth connecting hole, the bellows base is provided with a fourth connecting head, and the fourth connecting head is sealingly inserted into the fourth connecting hole.

[0013] Preferably, the right end of the connecting base is provided with an inflation connecting hole, and the inflation connector is sealingly inserted into the inflation connecting hole.

[0014] Preferably, the end cover base is integrally formed or formed in a split manner.

[0015] Preferably, the baratron tube is arranged on the connecting base or the end cover base.

[0016] Corresponding to the air channel communication assembly of the high-vibration-resistant gas density relay, the utility model also provides a high-vibration-resistant gas density relay.

[0017] As described above, the high vibration-resistant gas density relay and its gas passage connection assembly of this utility model have the following beneficial effects: The gas passage connection assembly of the high vibration-resistant gas density relay of this utility model directly connects the inner cavity of the Baden tube and the inner cavity of the first bellows through the connecting gas passage in the connecting base, thereby avoiding the risk of air leakage caused by using capillary tubes for connection, especially in high vibration environments, avoiding the risk of air leakage caused by capillary tube breakage. Therefore, the high vibration-resistant gas density relay and its gas passage connection assembly of this utility model can reliably connect the chambers of the relevant gas pressure components of the gas density relay, and are not easily affected by vibration and leak. Attached Figure Description

[0018] Figure 1 The image shown is a cross-sectional view of a first embodiment of a high vibration-resistant gas density relay and its gas passage connection component according to the present invention.

[0019] Figure 2 The image shown is a three-dimensional sectional view of the display device.

[0020] Figure 3 The image shown is a cross-sectional view of a second embodiment of a high vibration-resistant gas density relay and its gas passage connection component according to the present invention.

[0021] Figure 4 The image shown is a cross-sectional view of a third embodiment of the present invention, which describes a high vibration-resistant gas density relay and its gas passage connection component.

[0022] Component designation explanation

[0023] 1 First Chamber

[0024] 2 Second Chamber

[0025] 3. End cap base

[0026] 4. Corrugated pipe base

[0027] 5. Connecting base

[0028] 6. Connect the airway

[0029] 7. Corrugated airway

[0030] 8 First bellows

[0031] 9 Second Corrugated Pipe

[0032] 10 Micro switches

[0033] 11 Baden pipe

[0034] 12. Pointer mechanism

[0035] 13. Inflation connector

[0036] 14 inflation connection hole

[0037] 15 first connection hole

[0038] 16 first connection head

[0039] 17 second connection hole

[0040] 18 second connection head

[0041] 19 third connection hole

[0042] 20 third connection head

[0043] 21 fourth connection hole

[0044] 22 fourth connection head

[0045] 23 top rod

[0046] 24 sealed cavity DETAILED DESCRIPTION

[0047] The following embodiments of the present application will be described in detail by specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification.

[0048] It should be understood that the structures, proportions, sizes, etc. shown in the drawings attached to the specification are only used to understand and read the content disclosed in the specification by those skilled in the art, and are not used to limit the implementation conditions of the present application, so they do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application. At the same time, the terms such as "up", "down", "left", "right", "middle" and "one" in the specification are only for the convenience of clear description, and are not used to limit the scope of the present application. The change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the scope of the present application.

[0049] Please refer to Figure 1 and Figure 2The gas density relay comprises a first chamber 1 for accommodating a mounting barden tube 11 and a pointer mechanism 12, and a second chamber 2 for accommodating a mounting first bellow 8, a second bellow 9 and a micro switch 10. The barden tube 11 and the pointer mechanism 12 in the first chamber provide a display function, the barden tube 11 is deformed to drive the pointer mechanism 12 to display the gas density, the barden tube 11 is deformed according to the gas pressure in the inner chamber to drive the pointer mechanism 12 to display the correct gas density value, and generally, a bimetallic strip for temperature compensation is further connected between the driving end of the barden tube 11 and the pointer mechanism 12. The first bellow 8 and the micro switch 10 in the second chamber provide an alarm signal function, when the gas pressure in the electrical equipment reaches a critical value, the first bellow 8 is deformed according to the gas density in the inner chamber to drive the micro switch 10 to generate a corresponding electric signal through a top rod 23, and in order to make the deformation of the first bellow 8 more accurate, the second chamber is further provided with the second bellow 9, the second bellow 9 corrects the deformation of the first bellow 8, the outer side of the first bellow 8 has a sealed sealed chamber 24, and the sealed chamber 24 is filled with compensation gas to compensate the deformation of the bellow.

[0050] The utility model provides a kind of gas channel intercommunication subassembly of high anti-vibration gas density relay, as shown in figure Figures 1 to 4 The utility model provides a kind of gas channel intercommunication subassembly of high anti-vibration gas density relay, as shown in figure

[0051] The utility model provides a kind of gas channel intercommunication subassembly of high anti-vibration gas density relay, as shown in figure Figure 1As shown, the corrugated tube base 4 has a second connecting hole 17, the right end of the connecting base 5 has a second connecting head 18, the second connecting head 18 is sealingly inserted in the second connecting hole 17, and the second connecting head 18 and the second connecting hole 17 are sealed by a sealing ring. As a preferred embodiment, the end cover base can be integrally formed or composed of several parts.

[0052] The gas channel communication assembly of the high-vibration-resistant gas density relay of the utility model directly communicates the inner cavity of the baratron tube 11 and the inner cavity of the first corrugated tube 8 by the connecting gas channel 6 in the connecting base 5, thereby avoiding the air leakage risk caused by the use of the capillary tube for connection, especially in a high-vibration environment, avoiding the air leakage risk caused by the breakage of the capillary tube. Therefore, the high-vibration-resistant gas density relay and the gas channel communication assembly thereof can reliably communicate the cavities of the related gas pressure elements of the gas density relay and are not prone to air leakage due to vibration.

[0053] First embodiment:

[0054] As Figure 1 and Figure 2The utility model discloses a high anti -vibration's gas density relay and air passage intercommunication subassembly thereof first embodiment, end cover base 3 separates first chamber 1 and second chamber 2, so that first chamber 1 and second chamber 2 gas tightness insulates, installs barthen pipe 11 and pointer mechanism 12 in first chamber 1, installs first bellow 8, second bellow 9 and microswitch 10 in second chamber 2. End cover base 3 is equipped with first connecting hole 15, the left end of connecting base 5 has first connecting head 16, first connecting head 16 is sealedly inserted in first connecting hole 15, and first connecting head 16 and first connecting hole 15 are sealed through sealing ring, and the air inlet of barthen pipe 11 is sealedly connected in first connecting head 16, and the air inlet of barthen pipe 11 is opposite with the outlet of connecting air passage 6 of first connecting head 16 end, like this, barthen pipe 11 is directly communicated with the connecting air passage 6 of connecting base 5, need not use capillary, to avoid the risk of capillary fracture gas leakage.

[0055] In order to facilitate the connection of the bellow base 4 and the connecting base 5, as shown in the drawings, the bellow base 4 has a second connecting hole 17, and the right end of the connecting base 5 has a second connecting head 18, which is sealingly inserted into the second connecting hole 17. The second connecting head 18 and the second connecting hole 17 are sealed by a sealing ring. Figure 1 In order to facilitate the connection of the connecting base 5 and the inflation connector 13, the connecting base 5 is further provided with an inflation connecting hole 14, and the inflation connector 13 is sealingly inserted into the inflation connecting hole 14. The inflation connector 13 and the inflation connecting hole 14 are sealed by a sealing ring. Figure 1In the gas density relay, the second bellows 9 is disposed in the inner cavity of the first bellows 8, the micro switch 10 is disposed on the left side of the first bellows 8, and the push rod 23 extends to the left from the hollow inner cavity of the second bellows 9. The end of the push rod 23 is provided with an operating component for triggering the micro switch 10.

[0056] Second embodiment:

[0057] like Figure 3 The image shows a second embodiment of a high vibration-resistant gas density relay and its gas passage connection component according to this utility model. Figure 1 The gas density relay and its gas passage connection assembly shown are different in that... Figure 3 In the gas density relay, the second bellows 9 is located outside the first bellows 8 and connected in series with it. The microswitch 10 is located on the right side of the first bellows 8. The push rod 23 extends to the right from the hollow inner cavity of the second bellows 9, and the end of the push rod 23 is provided with an operating component for triggering the microswitch 10. To adapt to the spatial layout, the connecting base 5 is relatively short, and a third connecting hole 19 is provided at the right end of the connecting base 5. The bellows base 4 has a third connector 20, which is sealed and inserted into the third connecting hole 19. The third connector 20 and the third connecting hole 19 are sealed together by a sealing ring. Figure 3 The bellows base 4 of the gas density relay is provided with an inflation connection hole 14. The inflation connector 13 is sealed and inserted into the inflation connection hole 14. The inflation connector 13 and the inflation connection hole 14 are sealed and connected by a sealing ring.

[0058] Third embodiment:

[0059] like Figure 4 The image shows a third embodiment of the present invention: a high vibration-resistant gas density relay and its gas passage connection component. Figure 1 The gas density relay and its gas passage connection assembly shown are different in that... Figure 4 The first bellows 8 and the second bellows 9 extend vertically. A fourth connecting hole 21 is provided on the upper side of the middle part of the connecting base 5. The bellows base 4 has a fourth connector 22, which is sealed and inserted into the fourth connecting hole 21. The fourth connector 22 and the fourth connecting hole 21 are sealed together by a sealing ring. The first bellows 8 is sealed and fixed on the upper side of the bellows base 4. The second bellows 9 is positioned above the first bellows 8 and connected in series with it. A micro switch 10 is positioned above the second bellows 9. A push rod 23 extends upward from the hollow inner cavity of the second bellows 9. The end of the push rod 23 is provided with an operating component for triggering the micro switch 10. For easy connection of the inflation connector 13, such as... Figure 4 As shown, the connecting base 5 is also provided with an inflation connection hole 14, and the inflation connector 13 is sealed and inserted into the inflation connection hole 14.

[0060] Based on the technical solutions of the above-mentioned embodiments, the air passage communication assembly of the high-vibration-resistant gas density relay of the utility model, by connecting the inner cavity of the baratron tube 11 and the inner cavity of the first bellow 8 directly through the connecting air passage 6 in the connecting base 5, the risk of air leakage caused by the use of capillary for connection is avoided, especially in the high-vibration environment, the risk of air leakage caused by the breakage of the capillary is avoided.

[0061] In summary, the utility model effectively overcomes the various shortcomings in the prior art and has a high industrial utilization value.

[0062] The above-mentioned embodiments only exemplarily illustrate the principles and effects of the utility model, and are not used to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and category of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A gas channel communication assembly of a high-vibration-resistant gas density relay, the gas density relay comprising a first chamber for accommodating a mounting baratron and a pointer mechanism, and a second chamber for accommodating a mounting first bellows, second bellows and microswitch, characterized in that: the gas channel communication assembly comprises an end cover base, a connecting base and a bellows base, the end cover base separates the first chamber and the second chamber, the connecting base and the bellows base are located in the second chamber, the connecting base is connected with the end cover base and the bellows base; the first bellows is mounted on the bellows base and in communication with a bellows channel in the bellows base; a connecting channel is provided in the connecting base, one end of the connecting channel is in communication with an inner cavity of the baratron, the other end of the connecting channel is in communication with the bellows channel, a gas charging connector is mounted on the connecting base and in communication with the connecting channel, the gas charging connector is in communication with an insulating gas chamber of an electrical device. the end cover base is provided with a first connecting hole, the left end of the connecting base is provided with a first connecting head, the first connecting head is sealingly inserted into the first connecting hole, the gas inlet end of the baratron is sealingly connected to the first connecting head, and the gas inlet of the baratron is oppositely arranged to the outlet of the connecting channel at the end of the first connecting head.

2. The gas passage communication assembly of a highly vibration-resistant gas density relay according to claim 1, characterized by: the bellows base is provided with a second connecting hole, the right end of the connecting base is provided with a second connecting head, and the second connecting head is sealingly inserted into the second connecting hole.

3. The gas passage communication assembly of a highly vibration-resistant gas density relay according to claim 2, characterized by: the connecting base is further provided with a gas charging connecting hole, and the gas charging connector is sealingly inserted into the gas charging connecting hole.

4. The gas passage communication assembly of a highly vibration-resistant gas density relay according to claim 2, characterized by: the right end of the connecting base is provided with a third connecting hole, the bellows base is provided with a third connecting head, and the third connecting head is sealingly inserted into the third connecting hole.

5. The gas passage communication assembly of a highly vibration-resistant gas density relay according to claim 2, characterized by: the bellows base is further provided with a gas charging connecting hole, and the gas charging connector is sealingly inserted into the gas charging connecting hole.

6. The gas passage communication assembly of a highly vibration-resistant gas density relay according to claim 5, characterized by: the upper side of the middle part of the connecting base is provided with a fourth connecting hole, the bellows base is provided with a fourth connecting head, and the fourth connecting head is sealingly inserted into the fourth connecting hole.

7. The gas passage communicating assembly of a highly vibration-resistant gas density relay according to claim 2, characterized by: the right end of the connecting base is provided with a gas charging connecting hole, and the gas charging connector is sealingly inserted into the gas charging connecting hole.

8. The gas passage communication assembly of a highly vibration-resistant gas density relay according to claim 2, characterized by: the end cover base is integrally formed or formed in a split manner.

9. The gas passage communicating assembly of a highly vibration-resistant gas density relay according to claim 1, characterized by: the baratron is arranged on the connecting base or the end cover base.

10. The gas passage communicating assembly of a highly vibration-resistant gas density relay according to claim 1, characterized by: a high-vibration-resistant gas density relay comprising the gas channel communication assembly according to any one of claims 1 to 10.

11. A gas density relay having high vibration resistance, characterized by ​

Images