CN217683417U - Self-sealing inflation connector and gas-insulated metal-enclosed switchgear - Google Patents
Self-sealing inflation connector and gas-insulated metal-enclosed switchgear Download PDFInfo
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- CN217683417U CN217683417U CN202123099046.8U CN202123099046U CN217683417U CN 217683417 U CN217683417 U CN 217683417U CN 202123099046 U CN202123099046 U CN 202123099046U CN 217683417 U CN217683417 U CN 217683417U
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Abstract
The utility model relates to a self-sealing inflation connector and gas insulated metal enclosed switchgear, wherein, the self-sealing inflation connector comprises a connector shell, an inflation channel is arranged in the connector shell, a valve core is movably assembled in the inflation channel, a valve seat used for matching with the valve core in a jacking way to realize sealing is arranged on the connector shell, a spring mounting seat is also arranged in the inflation channel, a spring is arranged between the spring mounting seat and the valve core, the spring is used for jacking the valve core on the valve seat, and a gas channel is also arranged on the spring mounting seat; the self-sealing inflation joint further comprises a filter element, the filter element is assembled in the inflation channel in a threaded mode, and the spring mounting seat is supported on the filter element. The utility model provides a proclaim oneself and aerify joint not only can filter the metallic foreign matter granule in the gas, can also solve simultaneously and proclaim oneself and aerify the problem that the joint equipment is loaded down with trivial details and filtration efficiency is lower among the prior art.
Description
Technical Field
The utility model belongs to the technical field of the inflatable joint, concretely relates to proclaim oneself inflatable joint and gas insulated metal enclosed switchgear.
Background
The existing gas insulated metal enclosed switchgear (GIS) generally adopts a self-sealing inflation joint to realize the inflation and the sealing of the insulating gas in a gas chamber. When insulating gas is filled into an air chamber of a gas insulated metal-enclosed switchgear product, in order to ensure the cleanliness of the filled gas, a pre-filter is arranged at the upstream of a self-sealing inflation joint in a traditional mode, so that the insulating gas firstly passes through the pre-filter and then is filled into the air chamber through the self-sealing inflation joint. However, the self-sealing inflating joint inevitably generates contact friction in the contact process of the thimble, and then trace metal foreign matters generated by the contact friction enter the product. Because the gas insulated metal-enclosed switchgear product has a high requirement on the insulation property, if a metal foreign matter exists inside the gas insulated metal-enclosed switchgear product, the insulation property of the product is remarkably reduced, and a discharge phenomenon is caused during a factory withstand voltage test or field operation, so that a filter element positioned at the downstream of the gas inlet needs to be arranged in the self-sealing gas-filled joint to prevent the metal foreign matter from entering the product.
In prior art, also there is the self-sealing inflation connector of inside filter core that is equipped with, for example, grant publication number CN 205715885U's the utility model discloses a inflation valve in China, this inflation valve includes the valve body (connect the shell promptly), be equipped with fluid passage (aerify the passageway promptly) in the joint shell, it is equipped with the case to slide in the inflation passageway, be equipped with on the joint shell be used for with case roof pressure complex disk seat, still install the spring mount pad in the inflation passageway, install the spring on the spring mount pad, the spring is used for with case roof pressure on the disk seat, be equipped with in the spring mount pad along the mounting groove of aerifing passageway axial extension, back filtration (the filter core promptly) is installed to the tank bottom of mounting groove.
The proclaim oneself of prior art aerifys to connect can filter the gas behind the case, but filter core in the above-mentioned inflation valve when the installation, at first need install the filter core in spring mounting seat's mounting groove, then still need screw into the inflation channel with spring mounting seat, it is comparatively complicated to make proclaim oneself and aerify the whole assembling process of joint like this, and because the filter core is installed in spring mounting seat's mounting groove, make the radial dimension of filter core receive the restriction of mounting groove size like this, the filter area who leads to the filter core is less, the filtration efficiency of filter core has been reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a self-sealing inflation joint to solve the problems of complex assembly and low filtration efficiency of the self-sealing inflation joint in the prior art; an object of the utility model is also to provide a gas insulated metal enclosed switchgear to proclaim oneself among the solution prior art and aerify the loaded down with trivial details and the lower problem of filtration efficiency of joint equipment.
In order to achieve the above object, the utility model provides a self-sealing inflation connector adopts following technical scheme:
a self-sealing inflation joint comprises a joint shell, an inflation channel is arranged in the joint shell, a valve core is movably assembled in the inflation channel, a valve seat used for being in abutting fit with the valve core to achieve sealing is arranged on the joint shell, a spring mounting seat is further installed in the inflation channel, a spring is arranged between the spring mounting seat and the valve core and used for abutting the valve core on the valve seat, and a gas channel extending along the axial direction of the inflation channel is further arranged on the spring mounting seat; the self-sealing inflation joint further comprises a filter element, the filter element is assembled in the inflation channel in a threaded mode, and the spring mounting seat is supported on the filter element.
The beneficial effects of the above technical scheme are that: the utility model provides a proclaim oneself and aerify joint is through assembling the filter core screw thread in the inflation channel, so not only can be through the metallic foreign object in the filter core filtering gas, moreover because the outer peripheral face of filter core direct with the inner wall screw-thread fit who aerifys the channel, compare with prior art, the size of filter core no longer receives the restriction of spring mounting seat, can choose the filter core that radial dimension is bigger for use, can increase the filter area of filter core like this, be favorable to improving proclaim oneself and aerify the gas filtration efficiency who connects. In addition, because the spring mounting seat is supported on the filter element, the spring mounting seat and the joint shell do not need to be additionally fixed, so that the mounting procedures of the spring mounting seat and the filter element are simplified, and the assembly of the self-sealing inflation joint is further simplified.
Furthermore, the valve core comprises a guide rod which is guided to penetrate through the spring mounting seat, the filter element is a cylindrical filter element, and the guide rod penetrates through the spring mounting seat and extends into the cylindrical filter element.
The beneficial effects of the above technical scheme are that: therefore, the guide distance between the guide rod and the spring mounting seat can be increased, and the stability of the guide between the guide rod and the spring mounting seat is ensured. In addition, the cylindrical filter element can avoid a guide rod penetrating out of the spring mounting seat, and the interference of the spring mounting seat on the action of the guide rod is avoided.
Furthermore, the inflation channel is provided with an air inlet positioned at one end of the inflation channel, the air inlet is used for ejecting an inflation tool, the inflation channel is also provided with an air outlet positioned at the other end of the inflation channel, the inner wall of the air outlet is provided with a threaded section, and the filter element is arranged on the threaded section; the valve core is assembled in the inflation channel in a sliding mode, a conical valve port which is arranged corresponding to the valve core is arranged on the valve seat, and the conical valve port faces the air outlet.
The beneficial effects of the above technical scheme are that: the valve core is arranged in the inflation channel from one side of the air outlet of the joint shell, so that a conical valve port arranged towards the air outlet can be arranged in the valve seat, and the sealing performance of the self-sealing inflation joint can be improved through the matching of the conical valve port and the valve core.
Further, the filter core is kept away from the terminal surface of spring mount pad one end with the corresponding end terminal surface parallel and level of joint shell, perhaps, the terminal surface that spring mount pad one end was kept away from to the filter core is located the one side towards the spring mount pad of the corresponding end terminal surface of joint shell.
The beneficial effects of the above technical scheme are that: the length of the filter element in the axial direction of the inflation channel can be shortened, and then the length of the whole self-sealing inflation joint in the axial direction of the inflation channel can be relatively shortened, so that the size of the whole self-sealing inflation joint is small, the transportation of the self-sealing inflation joint is facilitated, and meanwhile, the cost is relatively reduced.
Further, the filter element is a sintered filter element.
The beneficial effects of the above technical scheme are that: adopt the sintering filter core as the filter core of self-sealing inflatable joint, not only can satisfy the processing of screw thread on its periphery because the intensity of sintering filter core like this, the filter fineness of sintering filter core also can satisfy the filtration requirement to metal foreign particles in the gas simultaneously, guarantees to implement effective filtration to metal foreign particles.
In order to achieve the above object, the present invention provides a gas-insulated metal-enclosed switchgear, which adopts the following technical solution:
a gas insulated metal-enclosed switchgear comprises a self-sealing inflation joint connected with an inflation inlet of a gas chamber of the gas insulated metal-enclosed switchgear, wherein the self-sealing inflation joint comprises a joint shell, an inflation channel is arranged in the joint shell, a valve core is movably assembled in the inflation channel, a valve seat used for being in press fit with the valve core to realize sealing is arranged on the joint shell, a spring mounting seat is further arranged in the inflation channel, a spring is arranged between the spring mounting seat and the valve core and used for pressing the valve core on the valve seat, and a gas channel extending along the axial direction of the inflation channel is further arranged on the spring mounting seat; the self-sealing inflation connector further comprises a filter element, the filter element is assembled in the inflation channel in a threaded mode, and the spring mounting seat is supported on the filter element.
The beneficial effects of the above technical scheme are that: the utility model provides a gas insulated metal enclosed switchgear is through will proclaiming oneself the filter core screw assembly among the gas filled connector in the inflation channel, so not only can be through the metallic foreign matter granule in the filter core filtered gas, avoid the metallic foreign matter granule to get into in the gas chamber of gas insulated metal enclosed switchgear product, be favorable to improving the outgoing test qualification rate and the product quality of gas insulated metal enclosed switchgear product. And because the outer peripheral face of filter core is direct with the inner wall screw-thread fit of aerifing the passageway, compare with prior art, the size of filter core no longer receives the restriction of spring mount pad, can choose for use the bigger filter core of radial dimension for use, can increase the filter area of filter core like this, be favorable to improving the gas filtration efficiency who proclaims oneself the gas connection, and then also be favorable to improving the efficiency that gas insulation metal enclosed switchgear product dispatched from the factory and tested. In addition, because the spring mounting seat is supported on the filter element, the spring mounting seat and the joint shell do not need to be additionally fixed, so that the mounting procedures of the spring mounting seat and the filter element are simplified, the assembly of the self-sealing inflation joint is further simplified, and the assembly efficiency of a gas-insulated metal-enclosed switchgear product is also improved.
Furthermore, the valve core comprises a guide rod which is guided to penetrate through the spring mounting seat, the filter core is a cylindrical filter core, and the guide rod penetrates through the spring mounting seat and extends into the cylindrical filter core.
The beneficial effects of the above technical scheme are that: therefore, the guide distance between the guide rod and the spring mounting seat can be increased, and the stability of the guide between the guide rod and the spring mounting seat is ensured. In addition, the cylindrical filter element can also avoid a guide rod penetrating out of the spring mounting seat, and the interference of the spring mounting seat on the action of the guide rod is avoided.
Furthermore, the inflation channel is provided with an air inlet positioned at one end of the inflation channel, the air inlet is used for ejecting an inflation tool, the inflation channel is also provided with an air outlet positioned at the other end of the inflation channel, the inner wall of the air outlet is provided with a threaded section, and the filter element is arranged on the threaded section; the valve core is assembled in the inflation channel in a sliding mode, a conical valve port which corresponds to the valve core is arranged on the valve seat, and the conical valve port faces the air outlet.
The beneficial effects of the above technical scheme are that: the valve core is arranged in the inflation channel from one side of the air outlet of the joint shell, so that a conical valve port arranged towards the air outlet can be arranged in the valve seat, and the sealing performance of the self-sealing inflation joint is improved through the matching of the conical valve port and the valve core.
Further, the filter core is kept away from the terminal surface of spring mount pad one end with the corresponding end terminal surface parallel and level of joint shell, perhaps, the terminal surface that spring mount pad one end was kept away from to the filter core is located the one side towards the spring mount pad of the corresponding end terminal surface of joint shell.
The beneficial effects of the above technical scheme are that: the length of the filter element in the axial direction of the inflation channel can be shortened, and then the length of the whole self-sealing inflation joint in the axial direction of the inflation channel can be relatively shortened, so that the size of the whole self-sealing inflation joint is small, the transportation of the self-sealing inflation joint is facilitated, and meanwhile, the cost is relatively reduced.
Further, the filter element is a sintered filter element.
The beneficial effects of the above technical scheme are that: adopt the sintering filter core as the filter core of self-sealing inflatable joint, not only can satisfy the processing of screw thread on its periphery because the intensity of sintering filter core like this, the filter fineness of sintering filter core also can satisfy the filtration requirement to metal foreign particles in the gas simultaneously, guarantees to implement effective filtration to metal foreign particles.
Drawings
FIG. 1 is a cross-sectional view of a self-sealing inflation fitting of the present invention;
FIG. 2 is a bottom view of FIG. 1;
fig. 3 is a schematic view of the installation of the self-sealing inflation joint on the gas insulated metal enclosed switchgear of the present invention.
In the figure: 100. a connector housing; 110. an inflation channel; 120. a valve seat; 121. a conical valve port; 130. an air inlet; 140. an air outlet; 141. a first thread segment; 142. a first smooth section; 150. a connecting flange; 200. pressing a glue thimble; 210. a cylindrical section; 220. a tapered section; 300. a guide rod; 400. a spring mounting seat; 410. a gas channel; 500. a spring; 600. sintering the filter element; 610. a second thread segment; 620. a second smooth section; 630. a cavity; 700. a protective cap; 800. an annular seal ring; 900. a self-sealing inflation joint; 1000. gas insulated metal enclosed switchgear.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that, in the embodiments of the present invention, relational terms such as "first" and "second", and the like, which may be present in the embodiments, are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between the entities or operations. Also, terms such as "comprises," "comprising," or any other variation thereof, which may be present, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the statement that "comprises a component of 8230; \8230;" comprises an element of 8230; "etc. may occur does not exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the component.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art through specific situations.
In the description of the present invention, unless otherwise explicitly specified or limited, the term "provided" should be understood broadly, for example, the object provided may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be detachable or non-detachable. The specific meaning of the above terms in the present invention can be understood by those skilled in the art through specific situations.
The present invention will be described in further detail with reference to examples.
The utility model discloses in proclaim oneself and seal embodiment 1 of inflatable joint:
as shown in fig. 1 and fig. 2, the self-sealing gas-filling connector 900 includes a connector housing 100, a connecting flange 150 is disposed at a housing end of the connector housing 100, and the connecting flange 150 is used to mount the self-sealing gas-filling connector 900 on the gas-insulated metal-enclosed switchgear 1000 (shown in fig. 3), so as to fill and enclose the insulating gas in the gas chamber of the gas-insulated metal-enclosed switchgear 1000 through the self-sealing gas-filling connector 900. An inflation channel 110 is provided in the connector housing 100, the inflation channel 110 having an air inlet 130 at one end thereof, the air inlet 130 being adapted for insertion of an inflation tool (not shown). The inflation channel 110 also has an air outlet 140 at its other end, and the air outlet 140 is located at an end adjacent to the attachment flange 150. The inflation channel 110 further includes a first threaded section 141 proximate the air inlet 130 and a first smooth section 142 distal from the air inlet 130, with the first threaded section 141 and the first smooth section 142 both being located at an end proximate the air outlet 140.
As shown in fig. 1, a valve core is slidably mounted in the inflation channel 110, and the valve core includes a glue pressing thimble 200 and a guide rod 300 fixedly connected to an end of the glue pressing thimble 200, wherein the glue pressing thimble 200 includes a cylindrical section 210 located at the air inlet 130 and a conical section 220 located downstream of the cylindrical section 210, and the conical section 220 is not slidably engaged with the air inlet 130; the guide rod 300 is fixedly connected to the end of the tapered section 220, and the guide rod 300 is stepped. The joint housing 100 is provided with a valve seat 120, the valve seat 120 is disposed around the circumferential surface of the inflation channel 110, the valve seat 120 has a tapered valve port 121, and the tapered valve port 121 is disposed toward the air outlet 140.
As shown in fig. 1 and 2, a spring mounting seat 400 is further installed in the inflation channel 110, a plurality of gas channels 410 are arranged on the spring mounting seat 400 and circumferentially surround the guide rod 300, the gas channels 410 penetrate through the spring mounting seat 400, and the gas channels 410 are used for the inflation gas to pass through. The spring 500 is mounted on the spring mounting seat 400, one end of the spring 500 is fixedly connected with the end of the conical section 220 of the glue pressing thimble 200, and the other end of the spring 500 is fixedly connected with the spring mounting seat 400, so that the conical section 220 of the glue pressing thimble 200 is pressed against the conical valve port 121 of the valve seat 120 through the spring 500, and the annular sealing ring 800 is mounted on the conical section 220, so that the sealing of the self-sealing inflation joint 900 can be realized through the pressing fit of the conical section 220 and the conical valve port 121 and the annular sealing ring 800, and further, the sealing of the insulating gas in the gas chamber of the gas insulated metal closed switchgear 1000 can be realized. In addition, as shown in fig. 1 and 2, the guide rod 300 is guided to penetrate through the spring mounting seat 400, and the guide rod 300 penetrates through the spring mounting seat 400.
As shown in fig. 1, a filter element is further installed in the gas filling channel 110, and in this embodiment, the filter element is a sintered filter element 600, the sintered filter element 600 is a cylindrical structure with a cavity 630, and an end of the sintered filter element 600 far away from the spring mounting seat 400 is a closed end. A second threaded section 610 and a second smooth section 620 are arranged on the outer circumferential surface of the sintered filter element 600, wherein the second threaded section 610 is in threaded fit with the first threaded section 141, i.e., the sintered filter element 600 is mounted on the first threaded section 141; the second smooth segment 620 is radially spaced from the first smooth segment 142 to facilitate threading of the sintered cartridge 600 into the plenum 110. Cavity 630 of sintered cartridge 600 may be set back from guide rod 300 exiting spring mount 400 to avoid interference of sintered cartridge 600 with the motion of guide rod 300. It should be noted that in this embodiment, the spring mounting seat 400 only penetrates into the inflation channel 110, and there is no connection between the spring mounting seat 400 and the joint housing 100. As shown in fig. 1, after the sintered filter cartridge 600 is installed in the aeration passage 110, the sintered filter cartridge 600 supports the spring installation seat 400, thereby applying an elastic force to the spring 500 toward the tapered section 220.
In addition, the sintered filter element 600 is used as the filter element of the self-sealing inflation connector 900, so that the strength of the sintered filter element 600 can meet the requirement for processing threads on the peripheral surface of the sintered filter element, meanwhile, the filtering precision of the sintered filter element 600 is 0.5 μm, the filtering requirement for metal foreign particles in gas can be met, effective filtering of the metal foreign particles is guaranteed, the metal foreign particles are prevented from entering a gas chamber of the gas insulated metal-enclosed switchgear 1000 to reduce the insulating property of the gas insulated metal-enclosed switchgear 1000, the delivery test qualification rate and the product quality of the gas insulated metal-enclosed switchgear 1000 are improved, the field operation safety of the gas insulated metal-enclosed switchgear 1000 is improved, and major accidents of power grid operation are avoided. And the end face of the end of the sintered filter element 600 far away from the spring mounting seat 400 is flush with the end face of the corresponding end of the joint housing 100, so that the axial length of the filter element in the inflation channel 110 can be shortened, and further, the axial length of the whole self-sealing inflation joint 900 in the inflation channel 110 can be relatively shortened, so that the size of the whole self-sealing inflation joint 900 is small.
In addition, as shown in fig. 1, a protective cap 700 is installed at one end of the connector housing 100 located at the air inlet 130, and after the self-sealing inflation connector 900 is used, the interior of the self-sealing inflation connector 900 can be protected by installing the protective cap 700, which is beneficial to prolonging the service life of the self-sealing inflation connector 900.
The utility model provides a self-sealing inflation joint is through assembling the filter core screw thread in inflation channel, so not only can be through the metallic foreign matter among the filter core filtering gas, moreover because the outer peripheral face of filter core direct with inflation channel's inner wall screw-thread fit, compare with prior art, the size of filter core no longer receives the restriction of spring mount pad, can choose the bigger filter core of radial dimension for use, can increase the filter area of filter core like this, be favorable to improving the gas filtration efficiency who proclaims oneself inflation joint. In addition, because the spring mounting seat is supported on the filter element, the spring mounting seat and the joint shell do not need to be additionally fixed, so that the mounting procedures of the spring mounting seat and the filter element are simplified, and the assembling procedure of the self-sealing inflation joint is further simplified.
The utility model discloses well proclaim oneself and aerify embodiment 2 of joint:
the present embodiment is different from embodiment 1 in that, in embodiment 1, the self-sealing gas-filled joint 900 is used for filling and sealing the insulating gas in the gas chamber of the gas insulated metal enclosed switchgear 1000. In this embodiment, the self-sealing gas-filling joint 900 may also be used for filling and sealing gas in other devices, such as an oxygen cylinder, a hydrogen cylinder, etc.
The utility model discloses well proclaim oneself and aerify embodiment 3 of joint:
this embodiment is different from embodiment 1 in that in embodiment 1, the end surface of the filter cartridge at the end away from the spring mounting seat 400 is flush with the corresponding end surface of the joint housing 100. In this embodiment, the end surface of the filter cartridge away from the spring seat 400 is located on the side of the end surface of the corresponding end of the joint housing 100 facing the spring seat 400.
The utility model discloses well proclaim oneself and aerify the embodiment 4 of joint:
the present embodiment is different from embodiment 1 in that, in embodiment 1, a valve seat 120 has a tapered valve port 121 provided corresponding to the valve element. In the present embodiment, the valve seat 120 has a ring-shaped planar valve port disposed corresponding to the valve core and facing the air outlet 140.
The utility model discloses in proclaim oneself and aerify the embodiment 5 of joint:
the difference between the present embodiment and embodiment 1 is that in embodiment 1, the filter element is a cylindrical filter element, and the guide rod 300 passes through the spring mounting seat 400 and extends into the cylindrical filter element, that is, the cylindrical filter element can avoid the action of the guide rod 300, and avoid interference to the action of the guide rod 300. In the present embodiment, the guide rod 300 is guided to be inserted into the spring mounting seat 400, but the guide rod 300 does not extend out of the spring mounting seat 400, and at this time, the filter element may be a cylindrical filter element or a solid filter element.
The utility model discloses in proclaim oneself and seal embodiment 6 of inflatable joint:
the present embodiment is different from embodiment 1 in that embodiment 1 includes a guide rod 300 guided to be inserted into a spring seat 400. In the embodiment, the valve core includes a flap hinged to the valve seat 120, the flap cooperates with the valve seat 120 to seal the self-sealing inflation joint 900, and the spring 500 cooperates with the top of the flap to achieve the return of the flap, that is, the flap, the valve seat 120 and the spring 500 form a roll-over valve.
The utility model discloses in proclaim oneself and aerify embodiment 7 of joint:
the present embodiment is different from embodiment 1 in that in embodiment 1, one end of the spring 500 is connected to the spring mount 400, and the other end is connected to the valve body. In this embodiment, the spring 500 is disposed between the valve core and the spring mounting seat 400, and both ends of the spring 500 are not connected to the valve core and the spring mounting seat 400.
The utility model discloses in proclaim oneself and seal embodiment 8 of inflatable joint:
the present embodiment is different from embodiment 1 in that, in embodiment 1, the filter element is a sintered filter element 600. And in this embodiment, the filter core is equipped with the external screw thread that is used for with aerifing passageway inner wall screw-thread fit including the installation section of thick bamboo on the outer peripheral face of installation section of thick bamboo, and installation section of thick bamboo internal fixation has the filter screen that can filter metallic foreign particles.
The utility model discloses well gas-insulated metal-enclosed switchgear's embodiment: the gas-insulated metal-enclosed switchgear comprises a self-sealing inflation connector 900 connected with an inflation port of a gas chamber of the gas-insulated metal-enclosed switchgear 1000, and the specific structure of the self-sealing inflation connector is the same as that of the self-sealing inflation connector in the above-mentioned embodiment of the self-sealing inflation connector, and will not be described again here.
The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A self-sealing inflation joint comprises a joint shell (100), an inflation channel (110) is arranged in the joint shell (100), a valve core is movably assembled in the inflation channel (110), a valve seat (120) which is used for being in press fit with the valve core to achieve sealing is arranged on the joint shell (100), a spring mounting seat (400) is further installed in the inflation channel (110), a spring (500) is arranged between the spring mounting seat (400) and the valve core, the spring (500) is used for pressing the valve core on the valve seat (120), and a gas channel (410) which extends along the axial direction of the inflation channel (110) is further arranged on the spring mounting seat (400); the self-sealing inflation connector (900) further comprises a filter element, and is characterized in that the filter element is assembled in the inflation channel (110) in a threaded mode, and the spring mounting seat (400) is supported on the filter element.
2. The self-sealing inflation joint of claim 1, wherein the valve core comprises a guide rod (300) which is guided and arranged in the spring mounting seat (400) in a penetrating way, the filter element is a cylindrical filter element, and the guide rod (300) penetrates out of the spring mounting seat (400) and extends into the cylindrical filter element.
3. The self-sealing inflation joint according to claim 1 or 2, wherein the inflation channel (110) is provided with an air inlet (130) at one end of the inflation channel (110), the air inlet (130) is used for ejecting an inflation tool, the inflation channel (110) is also provided with an air outlet (140) at the other end of the inflation channel (110), the inner wall of the air outlet (140) is provided with a threaded section, and the filter element is arranged on the threaded section; the valve core is slidably assembled in the inflation channel (110), a conical valve port (121) which is arranged corresponding to the valve core is arranged on the valve seat (120), and the conical valve port (121) is arranged towards the air outlet (140).
4. The self-sealing inflation joint according to claim 1 or 2, wherein the end surface of the filter element at the end far away from the spring mounting seat (400) is flush with the corresponding end surface of the joint housing (100), or the end surface of the filter element at the end far away from the spring mounting seat (400) is located on the side of the corresponding end surface of the joint housing (100) facing the spring mounting seat (400).
5. The self-sealing pneumatic joint according to claim 1 or 2, wherein the filter element is a sintered filter element (600).
6. A gas insulated metal-enclosed switchgear comprises a self-sealing inflation joint (900) connected with an inflation inlet of a gas chamber of a gas insulated metal-enclosed switchgear (1000), wherein the self-sealing inflation joint (900) comprises a joint shell (100), an inflation channel (110) is arranged in the joint shell (100), a valve core is movably assembled in the inflation channel (110), a valve seat (120) which is used for being in top-pressing fit with the valve core to achieve sealing is arranged on the joint shell (100), a spring mounting seat (400) is further installed in the inflation channel (110), a spring (500) is arranged between the spring mounting seat (400) and the valve core, the spring (500) is used for pressing the valve core on the valve seat (120), and a gas channel (410) which extends along the axial direction of the inflation channel (110) is further arranged on the spring mounting seat (400); the self-sealing inflation connector (900) further comprises a filter element, and is characterized in that the filter element is assembled in the inflation channel (110) in a threaded mode, and the spring mounting seat (400) is supported on the filter element.
7. The gas insulated metal enclosed switchgear according to claim 6, wherein said valve cartridge comprises a guide rod (300) inserted through a spring mounting seat (400), said filter cartridge is a cylindrical filter cartridge, and said guide rod (300) penetrates through said spring mounting seat (400) and extends into said cylindrical filter cartridge.
8. The gas insulated metal enclosed switchgear according to claim 6 or 7, wherein said gas filling channel (110) has a gas inlet (130) at one end of the gas filling channel (110), the gas inlet (130) being used for ejecting a gas filling tool, the gas filling channel (110) further has a gas outlet (140) at the other end of the gas filling channel (110), the inner wall of the gas outlet (140) is provided with a threaded section, and said filter element is mounted on the threaded section; the valve core is slidably assembled in the inflation channel (110), a conical valve port (121) which is arranged corresponding to the valve core is arranged on the valve seat (120), and the conical valve port (121) is arranged towards the air outlet (140).
9. The gas insulated metal enclosed switchgear according to claim 6 or 7, wherein an end surface of the filter element at an end remote from the spring mounting seat (400) is flush with a corresponding end surface of the joint housing (100), or an end surface of the filter element at an end remote from the spring mounting seat (400) is located on a side of the corresponding end surface of the joint housing (100) facing the spring mounting seat (400).
10. The gas insulated metal enclosed switchgear according to claim 6 or 7, wherein said filter element is a sintered filter element (600).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123099046.8U CN217683417U (en) | 2021-12-10 | 2021-12-10 | Self-sealing inflation connector and gas-insulated metal-enclosed switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123099046.8U CN217683417U (en) | 2021-12-10 | 2021-12-10 | Self-sealing inflation connector and gas-insulated metal-enclosed switchgear |
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| Publication Number | Publication Date |
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| CN217683417U true CN217683417U (en) | 2022-10-28 |
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| CN202123099046.8U Active CN217683417U (en) | 2021-12-10 | 2021-12-10 | Self-sealing inflation connector and gas-insulated metal-enclosed switchgear |
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| Country | Link |
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| CN (1) | CN217683417U (en) |
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