CN219588152U

CN219588152U - LPG/NG change-over switch

Info

Publication number: CN219588152U
Application number: CN202320534499.9U
Authority: CN
Inventors: 邵利军; 谢安源; 汪明; 廖质富
Original assignee: Chongqing Ampride Power & Machinery Co ltd
Current assignee: Chongqing Ampride Power & Machinery Co ltd
Priority date: 2023-03-17
Filing date: 2023-03-17
Publication date: 2023-08-25
Anticipated expiration: 2033-03-17

Abstract

The utility model discloses an LPG/NG change-over switch, which comprises a shell and a spherical change-over piece arranged in the shell, wherein the change-over piece is connected to a handle through a clamping piece and synchronously rotates under the drive of the handle, the change-over piece is arranged in a circular change-over groove, sealing gaskets are arranged on two opposite end surfaces of the change-over groove and are abutted with the change-over piece, and the axial direction of the sealing gaskets is perpendicular to the rotating shaft of the change-over piece; the handle is provided with a detection part which can correspond to the micro switch. According to the utility model, the two sealing gaskets are arranged in the switching groove, and the axial directions of the two sealing gaskets are perpendicular to the rotating shaft of the switching piece, so that the sealing gaskets play a role in sealing the two sides of the switching groove when the switching piece rotates, and the sealing effect of the shell on the two sides of the switching groove is ensured; in addition, the detection part can rotate along with the handle synchronously, the micro-switch can monitor the type of the introduced gas in real time, the control system can automatically adjust the ignition angle according to different types of the gas after the signal feedback is fed back in real time, so that the gas is burnt completely.

Description

LPG/NG change-over switch

Technical Field

The utility model relates to a change-over switch, in particular to an LPG/NG change-over switch.

Background

The LPG/NG change-over switch adopted in the market at present is mostly a valve or a columnar structure, and the change-over of fuel such as LPG/NG (liquefied petroleum gas/natural gas) can be realized to this kind of structure, but the internal tightness of this structure is not good, leads to the flow control difficulty of fuel, and the unable transfer LPG/NG's change-over signal of change-over switch leads to the combustion effect after two kinds of fuel switch not good simultaneously when this kind of change-over switch uses, and the problem of incomplete combustion easily appears in fuel.

Disclosure of Invention

The utility model aims at: aiming at the problems of poor sealing effect and poor fuel combustion effect of the fuel change-over switch in the prior art, the change-over switch for the LPG/NG is provided, which has good sealing effect and can transmit a change-over signal.

In order to achieve the above object, the present utility model provides the following technical solutions:

the utility model provides a change-over switch of LPG/NG, includes the casing and establishes the globular conversion piece in the casing inside, and the conversion piece is connected to the handle through the joint piece and rotates in step under the handle drive, and the conversion piece is arranged in circular switching groove, and the two opposite end faces in switching groove all are equipped with sealed pad and conversion piece butt, and the axial of sealed pad is perpendicular to the rotation axis of conversion piece; the handle is provided with a detection part which can correspond to the micro switch.

By adopting the technical characteristics, the spherical conversion piece is placed in the switching groove by arranging the switching groove in the shell, and the two sealing gaskets are arranged in the switching groove because the conversion piece can rotate and switch the type of communicated fuel gas of the whole conversion switch, and the axial directions of the two sealing gaskets are perpendicular to the rotating shaft of the conversion piece, so that the sealing gaskets play a sealing effect on two sides of the switching groove when the conversion piece rotates, and the sealing effect of the shell on two sides of the switching groove is ensured; in addition, when the conversion piece rotates to switch the gas, the conversion piece is driven to rotate through the handle, so that the detection part is arranged on the handle, the detection part can synchronously rotate along with the handle, the micro switch is used for monitoring the position of the detection part to feed back corresponding signals, when the micro switch monitors the position change of the detection part and transmits the signals, the gas guide hole of the internal conversion piece is switched, the type of the gas to be introduced can be monitored in real time, the real-time feedback is realized, and the control system can automatically adjust the ignition angle according to the different types of the gas after the signal feedback so as to ensure that the gas is completely combusted.

Further, the air guide hole is provided with two large holes and small holes which are mutually perpendicular and have different radiuses, the large holes are used for being connected with natural gas, and the small holes are used for being connected with liquefied petroleum gas. Because the combustion heat values of natural gas and liquefied petroleum gas are different, the air guide holes are large holes and small holes with different radiuses, and when the gas inlet speeds are consistent, the cross section area is changed to adjust the amount of gas passing through in unit time so as to ensure the combustion effect of the gas.

Further, the casing is divided into a base member and an end member at the position of the switching groove, one end of the base member is provided with a first air guide connector, the other end of the base member is provided with the switching groove with an opening at the end, and the other side wall of the switching groove is located at the end of the end member. The shell structure is divided into a plurality of parts which can be combined together, so that the arrangement of the conversion part and the processing of the internal space of the switching groove are facilitated.

Further, the other end of the end piece is provided with a second air guide connector, and the two air guide connectors are coaxially arranged. The first air guide connector and the second air guide connector are used for connecting and realizing the access and the export of fuel gas.

Further, the handle and the clamping piece are arranged along the direction perpendicular to the air guide hole. The handle is convenient to drive the conversion piece to rotate, and different air guide holes are convenient to switch.

Further, one end of the clamping piece is provided with a clamp, and the clamp is clamped into the conversion piece and drives the conversion piece to rotate; the other end of the clamping piece is fixedly connected with the handle. The clamping piece drives the conversion piece to rotate through the clamp structure, the clamp end of the clamping piece is clamped into the conversion piece, and the other end of the clamping piece is connected with the handle and synchronously rotates.

Further, the clip is in a protruding square shape, the middle part of the handle is connected with the clamping piece through a bolt, and the clip is square. Square clip, which is convenient for the synchronous rotation of the clamping piece and the conversion piece.

Further, the clamping piece stretches into the switching groove, and the periphery of the clamping piece is sleeved with a sealing ring and is in butt joint with the inner wall of the shell through the sealing ring. The clamping piece stretches into the switching groove and can be connected with the conversion piece conveniently, and a sealing ring is arranged outside the clamping piece, so that tightness of the clamping piece after being connected is guaranteed, and gas leakage is prevented.

Further, the clamping piece is columnar, and two sealing rings are arranged. And the sealing rings ensure the tightness of the clamping piece peripheral ring.

Further, the handle radially extends to form a holding disc, the upper plane and the lower plane of the holding disc are recessed towards the middle part along the axial direction, and the cambered surface of the holding disc is provided with a plurality of pit structures. The concave middle part of holding the setting of holding disk, the pit of cambered surface have increased the area of contact on the handle, make things convenient for operating personnel's hand to hold the handle tightly, prevent to skid.

In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:

the spherical conversion piece is placed in the switching groove by arranging the switching groove in the shell, and two sealing gaskets are arranged in the switching groove and are parallel to the axial direction of the gas guide hole due to the fact that the conversion piece can rotate and switch the type of communicated gas of the whole conversion switch, so that the sealing gaskets have sealing effect on two side surfaces of the gas guide hole when the gas guide hole is filled with the gas, and the sealing effect in the two directions is good; in addition, when the conversion piece rotates to switch the gas, the conversion piece is driven to rotate through the handle, so that the detection part is arranged on the handle, the detection part can synchronously rotate along with the handle, the micro switch is used for monitoring the position of the detection part to feed back corresponding signals, when the micro switch monitors the position change of the detection part and transmits the signals, the gas guide hole of the internal conversion piece is switched, the type of the gas to be introduced can be monitored in real time, the real-time feedback is realized, and the control system can automatically adjust the ignition angle according to the different types of the gas after the signal feedback so as to ensure that the gas is completely combusted.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 shows a block diagram of a transfer switch of the LPG/NG of the present utility model.

Fig. 2 shows a longitudinal section through fig. 1.

Fig. 3 shows a transverse section of fig. 1.

Wherein the above figures include the following reference numerals:

10 conversion parts; 11 macropores; 12 small holes;

20 clamping pieces; 21 clips;

30 handles; 31 a detection unit; 32 holding a holding disk;

41 a base member; 42 end pieces; 43 a first air guide connector; 44 a second air guide connector; 45 switching slots; 46 a gasket;

a 50 bolt; 60 sealing rings.

Detailed Description

It is noted that all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs unless otherwise indicated.

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

As shown in fig. 1 to 3, according to different types of required fuel, the handle 30 is rotated, and the handle 30 drives the conversion piece 10 to rotate, so that the switching between the big hole 11 and the small hole 12 is realized; after the handle 30 rotates in place, the micro switch detects the position change of the detection part 31, and the micro switch sends a signal to feed back which air guide hole (the big hole 11 or the small hole 12) of the whole transfer switch is in place, so as to inform the controller of the type of accessible fuel gas; so as to facilitate the subsequent operations such as the switching of the introduced fuel gas, the on-off of the fuel gas and the like.

The utility model provides a change-over switch of LPG/NG, including the casing and set up the ball-shaped conversion piece 10 in the casing inside, conversion piece 10 is connected to handle 30 through joint piece 20 and is rotated in step under the drive of handle 30, conversion piece 10 is arranged in circular switching groove 45, the both opposite end faces of switching groove 45 all are equipped with sealing gasket 46 and conversion piece 10 butt, the axial direction of sealing gasket 46 is perpendicular to the rotation axis of conversion piece 10, sealing gasket 46 is parallel to the axial direction of the air vent in the middle part of conversion piece 10; the handle 30 is provided with a detection portion 31 which can correspond to the micro switch.

By adopting the technical characteristics, the spherical conversion piece 10 is placed in the switching groove 45 by arranging the switching groove 45 in the shell, and two sealing gaskets 46 are arranged in the switching groove 45 because the conversion piece 10 can rotate and switch the type of the communicated fuel gas of the whole conversion switch, and the axial directions of the two sealing gaskets 46 are perpendicular to the rotating shaft of the conversion piece 10, so that the sealing gaskets 46 have sealing effect on two sides of the switching groove 45 when the conversion piece 10 rotates, and the sealing effect of the shell on two sides of the switching groove 45 is ensured; in addition, when the conversion piece 10 rotates to switch the gas, the conversion piece 10 is driven to rotate by the handle 30, so that the detection part 31 is arranged on the handle 30, the detection part 31 can synchronously rotate along with the handle 30, and the micro switch is used for monitoring the position of the detection part 31 to feed back corresponding signals, so that when the micro switch monitors the position change of the detection part 31 and transmits signals, the gas guide hole of the internal conversion piece 10 is switched, the type of the gas to be introduced can be monitored in real time, and the control system can automatically adjust the ignition angle according to different types of the gas after the signal feedback, so that the gas is completely combusted. The gasket 46 is annular.

Further, the air guide hole is provided with two large holes 11 and small holes 12 which are perpendicular to each other and have different radiuses, the large holes 11 are used for being connected with natural gas, and the small holes 12 are used for being connected with liquefied petroleum gas. Because the combustion heat values of the natural gas and the liquefied petroleum gas are different, the air guide holes are large holes 11 and small holes 12 with different radiuses, and when the gas inlet speeds are consistent, the cross section area is changed to adjust the amount of the gas passing through in unit time so as to ensure the combustion effect of the gas.

Further, the casing is divided into a base member 41 and an end member 42 at the position of the switching groove 45, one end of the base member 41 is provided with a first air guide joint 43, the other end is provided with the switching groove 45 with an open end, and the other side wall surrounding the complete switching groove 45 is positioned at the end of the end member 42. The housing structure is divided into several parts which can be combined together, so that the switching element 10 can be conveniently placed into the internal space of the switching groove 45 and processed.

Further, the other end of the end piece 42 is provided with a second air guide fitting 44, both coaxially disposed. The first air guide connector 43 and the second air guide connector 44 are used for connecting and realizing the access and the export of the fuel gas.

Further, the handle 30 and the clamping member 20 are arranged along the direction perpendicular to the air guide hole. The handle 30 is convenient to drive the conversion piece 10 to rotate, and different air guide holes are convenient to switch.

Further, one end of the clamping piece 20 is provided with a clamp 21, and the clamp 21 is clamped into the conversion piece 10 and drives the conversion piece 10 to rotate; the other end of the clamping piece 20 is fixedly connected with the handle 30. The clamping piece 20 drives the conversion piece 10 to rotate through the structure of the clamp 21, the clamp 21 end of the clamping piece 20 is clamped into the conversion piece 10, and the other end of the clamping piece 20 is connected with the handle 30 and rotates synchronously.

Further, the clip 21 is in a protruding square shape, the middle part of the handle 30 is connected with the clamping piece 20 through the bolt 50, and the clip 21 is in a square shape. The square clamp 21 facilitates synchronous rotation of the clamping piece 20 and the conversion piece 10.

Further, the clamping piece 20 stretches into the switching groove 45, and a sealing ring 60 is sleeved on the periphery of the clamping piece 20 and is in abutting connection with the inner wall of the shell through the sealing ring 60. The clamping piece 20 stretches into the switching groove 45 to be convenient to connect with the conversion piece 10, the sealing ring 60 is arranged outside the clamping piece 20, the tightness of the clamping piece 20 after being connected is ensured, and gas leakage is prevented.

Further, the clamping piece 20 is columnar, and the number of the sealing rings 60 is two. The plurality of seal rings 60 ensure the tightness of the circumference of the clamping piece 20.

Further, the handle 30 extends out of the holding disk 32 along the radial direction, the upper and lower planes of the holding disk 32 are recessed toward the middle part along the axial direction, and the cambered surface of the holding disk 32 is provided with a plurality of pit structures. The concave middle part and the concave arc surface of the holding disk 32 increase the contact area on the handle 30, thereby facilitating the holding of the handle 30 by the operator and preventing slipping.

The scope of the utility model is not to be limited by the embodiments described above, but by the appended claims and their equivalents.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The LPG/NG change-over switch is characterized by comprising a shell and a spherical change-over piece arranged in the shell, wherein the change-over piece is connected to a handle through a clamping piece and is driven by the handle to synchronously rotate, the change-over piece is arranged in a circular change-over groove, sealing gaskets are arranged on two opposite end surfaces of the change-over groove and are abutted against the change-over piece, the axial direction of the sealing gaskets is perpendicular to the rotating shaft of the change-over piece, and the sealing gaskets are parallel to the axial direction of an air guide hole in the middle of the change-over piece; the handle is provided with a detection part which can correspond to the micro switch.

2. The LPG/NG transfer switch of claim 1, characterized in that the gas-guide hole is provided with two large holes and small holes which are perpendicular to each other and have different radii, the large holes being for the access of natural gas and the small holes being for the access of liquefied petroleum gas.

3. The LPG/NG transfer switch of claim 1, characterized in that the housing is divided into a base member and an end member at the position of the transfer slot, one end of the base member is provided with a first air guide connector, the other end is the transfer slot with an open end, and the other side wall surrounding the complete transfer slot is located at the end of the end member.

4. A LPG/NG transfer switch according to claim 3, characterized in that the other end of the end piece is provided with a second air guide connector, both air guide connectors being coaxially arranged.

5. The LPG/NG transfer switch of claim 1, wherein the handle, the clip, are disposed in a direction perpendicular to the gas vent.

6. The LPG/NG conversion switch according to claim 5, characterized in that one end of said clamping member is provided with a clip, said clip being clamped into said conversion member and driving said conversion member to rotate; the other end of the clamping piece is fixedly connected with the handle.

7. The LPG/NG transfer switch of claim 6, characterized in that the clip is in a protruding square shape, the middle of the handle is connected to the clamping member by a bolt, and the clip is square.

8. The LPG/NG transfer switch of claim 1, wherein the clamping member extends into the switching groove, and a sealing ring is sleeved on the outer periphery of the clamping member and is abutted against the inner wall of the housing through the sealing ring.

9. The LPG/NG transfer switch of claim 8, wherein said snap-in member is cylindrical and said sealing ring has two.

10. The LPG/NG change-over switch according to claim 1, characterized in that the handle extends out in the radial direction to hold the holding disc, the upper and lower planes of the holding disc are recessed toward the middle in the axial direction, and the cambered surface of the holding disc is provided with a plurality of pit structures.