CN218511825U - Gas cutting device and gas meter - Google Patents

Abstract

The utility model discloses a gas cutting device and gas table, the gas cutting device includes fixed bolster, case subassembly and case actuating mechanism, and case actuating mechanism installs on the fixed bolster, wherein, set up the valve port that communicates with the last air inlet of gas table on the fixed bolster; the valve core component is arranged in the fixed bracket and connected with the valve core driving mechanism so as to control the on/off of the valve port under the driving of the valve core driving mechanism; the gap area corresponding to the maximum gap between the valve core assembly and the edge of the opening of the valve port is larger than or equal to the area of the cross section of the valve port. The utility model discloses a when gas cutting device control valve port switches on, can flow in time through the clearance between the opening border of case subassembly and valve port by the leading-in gas of valve port, can guarantee like this that the gas flows in the gas table that uses this gas cutting device smooth and easy nature, and can not influence the flow of gas because of gas cutting device's setting to satisfy the user demand of gas table.

Description

Gas cutting device and gas meter

Technical Field

The utility model belongs to the technical field of the gas table is relevant, especially, relate to a gas cutting device and gas table.

Background

A gas meter is generally provided with a gas shutoff device, so that when the gas meter is used for metering, gas can be automatically shut off according to factors such as arrearages and overflows.

At present, the existing gas cutting device has a complex structure and a large volume, and can control the cutting of gas in a gas meter in function, but is limited by the installation position of the gas cutting device, so that the gas cutting device is installed in the gas meter, and the smooth flow of the gas passing through the gas cutting device in the gas meter cannot be ensured.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a gas shutoff device and a gas meter for solving the above problems.

A gas cutting device is arranged on a gas meter and used for controlling the on/off of a gas inlet connector on the gas meter; the gas cutting device comprises a fixed support, a valve core assembly and a valve core driving mechanism, wherein the valve core driving mechanism is arranged on the fixed support, a valve port is formed in the fixed support, and the valve port is communicated with the gas inlet; the valve core assembly is arranged in the fixed support and is connected with the valve core driving mechanism so as to control the on/off of the valve port under the driving of the valve core driving mechanism;

and the gap area corresponding to the maximum gap between the valve core assembly and the opening edge of the valve port is larger than or equal to the area of the cross section of the valve port.

In this application, through the reasonable position between the opening border of above-mentioned case subassembly and valve port for when this gas cutting device control valve port switches on, the gas that is led in by the valve port can flow out in time through the clearance between the opening border of case subassembly and valve port, can guarantee like this that the gas flows in the gas table that uses this gas cutting device smooth and easy nature, and can not influence the flow of gas because of gas cutting device's setting, in order to satisfy the user demand of gas table.

In one embodiment, the cross section of the valve port is circular, and the maximum clearance between the valve core assembly and the opening edge is more than or equal to one fourth of the diameter of the valve port.

It can be understood that, through the structural arrangement, one embodiment of the valve port is realized, and the use requirement that the gap between the valve core assembly and the edge of the opening can lead out the fuel gas led in by the valve port in time is met.

In one embodiment, the valve core assembly comprises a valve core and a sealing sleeve, wherein the sealing sleeve is sleeved on the valve core;

the edge of the opening is provided with a sealing convex ring, the sealing convex ring is arranged on the periphery of the valve port, and the valve port is blocked by the matching between the sealing convex ring and the sealing sleeve.

It can be understood that the structural arrangement of the valve core assembly is specifically realized through the structural arrangement of the valve core and the sealing sleeve, and the valve port is blocked by utilizing the matching between the sealing convex ring and the sealing sleeve, so that the effect of cutting off the fuel gas when the fuel gas cutting device works is ensured.

In one embodiment, the valve core driving mechanism comprises a motor, a driving sleeve and a thread matching piece, wherein the driving sleeve is in transmission connection with the motor;

the thread matching element is fixedly installed in the valve core and is in threaded connection with the thread matching element so as to control the valve core to move up and down relative to the valve port under the driving of the motor.

It can be understood that, through the structural arrangement of the motor, the driving sleeve and the thread matching piece, the structural arrangement of the valve core driving mechanism is realized in particular, so as to meet the control of the valve core to do lifting motion relative to the valve port.

In one embodiment, the drive sleeve includes a sleeve portion and a screw portion that is provided on the sleeve portion in an axial direction of the sleeve portion and is screw-connected with the screw-fitting member.

It can be understood that, through the structural arrangement of the sleeve part and the screw part, the structural arrangement of the driving sleeve is specifically realized so as to meet the use requirement that the motor drives the screw-thread matching piece to move up and down through the driving sleeve.

In one embodiment, the fixed support comprises an upper support, a lower support and a sealed cabin body, wherein the sealed cabin body is detachably mounted on the upper support through the lower support;

the motor with the driving sleeve all install to in the sealed cabin body, wherein, the driving sleeve with be equipped with first sealing washer between the sealed cabin body, in order to right the driving sleeve with the sealed cabin body assembles sealedly.

It can be understood that the structural arrangement of the fixed bracket is realized through the structural arrangement of the upper bracket, the lower bracket and the sealed cabin body; and, through the structural setting of first sealing washer to seal this motor assembly in sealed cabin.

In one embodiment, the upper bracket has an inner bracket, wherein the cartridge assembly is disposed against an inner wall of the inner bracket, guided by contact between the cartridge assembly and the inner wall, to guide the cartridge assembly for reciprocal movement relative to the valve port.

It will be appreciated that the arrangement of the internal support described above provides for guiding the movement of the valve core assembly.

The application also requests to protect a gas meter, which comprises a gas meter shell, an air inlet connector and a gas cutting device, wherein the air inlet connector and the gas cutting device are both installed on the gas meter shell, an air inlet hole is formed inwards in the air inlet connector, and the gas cutting device is used for controlling the on/off of the air inlet hole; the gas shutoff device is provided as any one of the gas shutoff devices described above.

In this application, through the structure setting of above-mentioned gas cutting device, ensure that this gas cutting device of the leading-in gas route of connector of admitting air can flow in time, can ensure the smooth and easy nature that the gas flowed in this gas table shell like this, in-process, can not cause the influence to the flow of gas.

In one embodiment, the fixing support is detachably mounted on the gas meter shell, wherein a sealing pressing plate is arranged between the fixing support and the gas meter shell so as to assemble and seal the fixing support and the gas meter shell.

It can be understood that, through the structural arrangement of above-mentioned sealing pressure plate to assemble sealed to fixed bolster and gas table shell, take place to leak between fixed bolster and gas table shell in order to prevent the gas, can satisfy the user demand of this gas cutting device assembly in the gas table like this.

In one embodiment, the fixed bracket is provided with a connecting inner sleeve, and the valve port is arranged on the connecting inner sleeve;

the connecting inner sleeve part extends into the air inlet connector, wherein a second sealing ring is arranged between the connecting inner sleeve and the air inlet connector, so that the air inlet connector and the connecting inner sleeve are assembled and sealed.

It can be understood that, through the structural arrangement of the second sealing ring, the fixing bracket and the air inlet connector are assembled and sealed, so that the effect of cutting off the gas when the gas cutting-off device works is ensured.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a partial cross-sectional view of a gas meter provided in an embodiment of the present application;

FIG. 2 is an enlarged view of the portion P in FIG. 1;

fig. 3 is a cross-sectional view of a gas shutoff device according to an embodiment of the present application.

Reference numeral, 100, a gas shutoff device; 101. a valve port; 1011. an opening edge; 1012. sealing the convex ring; 102. connecting the inner sleeve; 10. fixing a bracket; 11. an upper bracket; 111. an inner support; 1111. an inner wall; 12. a lower bracket; 13. sealing the cabin body; 131. a first seal ring; 20. a valve core assembly; 21. a valve core; 22. sealing sleeves; 30. a valve core drive mechanism; 31. a motor; 32. a drive sleeve; 321. a sleeve portion; 322. a screw section; 33. a mating thread element; 34. a reduction gearbox; 200. an air inlet connector; 201. an air inlet; 300. a gas meter housing; 401. sealing the pressure plate; 402. and a second seal ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, 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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, a gas meter provided in an embodiment of the present application includes a gas meter case 300, an air inlet connector 200, and a gas shutoff device 100.

The gas inlet connector 200 and the gas cutting device 100 are both mounted on the gas meter housing 300, wherein the gas inlet connector 200 is formed with an air inlet hole 201 inwards, and the gas cutting device 100 is used for controlling the on/off of the air inlet hole 201. That is, when the gas meter of the present application is operated, the gas introduced into the gas meter case 300 by the gas inlet connector 200 can be controlled by the gas shutoff device 100, and specifically, the gas can be shut off according to the demand for use.

As shown in fig. 3, the gas shutoff device 100 of the present application includes a stationary bracket 10, a spool assembly 20, and a spool drive mechanism 30.

The valve core driving mechanism 30 is installed on the fixed support 10, wherein the fixed support 10 is provided with a valve port 101, and the valve port 101 is communicated with an air inlet 201; the valve core assembly 20 is installed in the fixed bracket 10 and connected to the valve core driving mechanism 30, so as to control the on/off of the valve port 101 under the driving of the valve core driving mechanism 30. That is, when the gas shutoff device 100 of the present invention is operated, specifically, the shutoff of the gas at the valve port 101 can be realized by controlling the operation of the valve element drive mechanism 30.

As shown in fig. 2, the fixing bracket 10 of the present application is detachably mounted on a gas meter housing 300, wherein a sealing pressing plate 401 is disposed between the fixing bracket 10 and the gas meter housing 300 to seal the fixing bracket 10 and the gas meter housing 300, so as to prevent the gas from leaking from the fixing bracket 10 and the gas meter housing 300, and meet the use requirement of the gas cutting device 100 assembled in the gas meter.

The fixing bracket 10 of the present application has a connecting inner sleeve 102, and the valve port 101 is disposed on the connecting inner sleeve 102; the connecting inner sleeve 102 partially extends into the air inlet connector 200, wherein a second sealing ring 402 is disposed between the connecting inner sleeve 102 and the air inlet connector 200 to assemble and seal the air inlet connector 200 and the connecting inner sleeve 102, so that the gas introduced by the air inlet connector 200 can be completely introduced into the gas shutoff device 100 through the valve port 101, thereby ensuring the effect of shutting off the gas when the gas shutoff device 100 operates.

In this application, the gap area corresponding to the maximum gap between the valve core assembly 20 and the opening edge 1011 of the valve port 101 is greater than or equal to the cross-sectional area of the valve port 101, so that when the gas cutoff device 100 controls the valve port 101 to be switched on, the gas introduced from the valve port 101 can flow out in time through the gap between the valve core assembly 20 and the opening edge 1011 of the valve port 101, thereby ensuring the smoothness of the flow of the gas in the gas meter using the gas cutoff device 100, and the flow of the gas cannot be influenced by the arrangement of the gas cutoff device 100, so as to meet the use requirement of the gas meter.

In one embodiment, the cross section of the valve port 101 is circular, and the maximum gap between the valve core assembly 20 and the opening edge 1011 is greater than or equal to one fourth of the diameter of the valve port 101, so that the use requirement that the gap between the valve core assembly 20 and the opening edge 1011 can guide out the fuel gas introduced by the valve port 101 in time can be met. It should be noted that the area corresponding to the gap between the valve core assembly 20 and the opening edge 1011, specifically the circumference of the valve port and the length of the gap, is not described herein.

As shown in fig. 3, the valve core assembly 20 of the present application includes a valve core 21 and a sealing sleeve 22, and the sealing sleeve 22 is sleeved on the valve core 21, so as to implement the structural arrangement of the valve core assembly 20.

The opening edge 1011 is provided with a sealing convex ring 1012, the sealing convex ring 1012 is arranged on the periphery of the valve port 101, and the valve port 101 is sealed by the matching between the sealing convex ring 1012 and the sealing sleeve 22, so that the effect of cutting off the gas when the gas cutting-off device 100 works can be ensured.

As shown in fig. 3, the valve core driving mechanism 30 of the present application includes a motor 31, a driving sleeve 32 and a screw fitting 33, wherein the driving sleeve 32 is in transmission connection with the motor 31; the screw-type engaging element 33 is fixedly installed in the valve core 21 and is screwed with the screw-type engaging element 33 to control the valve core 21 to move up and down relative to the valve port 101 under the driving of the motor 31, thereby embodying the structural configuration of the valve core driving mechanism 30 to satisfy the control of the valve core 21 to move up and down relative to the valve port 101. It should be noted that the motor 31 and the driving sleeve 32 can be connected by a transmission through a reduction box 34.

The driving sleeve 32 includes a sleeve portion 321 and a screw portion 322, and the screw portion 322 is disposed on the sleeve portion 321 along an axial direction of the sleeve portion 321 and is in threaded connection with the screw-thread matching element 33, so as to implement the structural arrangement of the driving sleeve 32, so as to meet the use requirement that the motor 31 drives the screw-thread matching element 33 to move up and down through the driving sleeve 32. It should be noted that the driving sleeve 32 may be configured as a copper member, and the screw-fitting member 33 is configured as a nut matched with the screw portion 322, and the nut is installed in the valve core 21 in a tight-fitting manner.

As shown in fig. 3, the fixing bracket 10 of the present application includes an upper bracket 11, a lower bracket 12 and a sealed cabin 13, and the sealed cabin 13 is detachably mounted on the upper bracket 11 through the lower bracket 12, thereby embodying the structural arrangement of the fixing bracket 10. It should be noted that the upper bracket 11 and the lower bracket 12 may be connected and fixed by a screw, or the upper bracket 11 and the lower bracket 12 may be connected and fixed as a whole, and the capsule body 13 and the lower bracket 12 may also be connected and fixed by a screw, which will not be described herein.

The motor 31 and the driving sleeve 32 are both installed inside the sealed cabin 13, and a first sealing ring 131 is arranged between the driving sleeve 32 and the sealed cabin 13 to assemble and seal the driving sleeve 32 and the sealed cabin 13, and specifically, the first sealing ring 131 can be sleeved on the sleeve portion 321 of the driving sleeve 32, so that the motor 31 can be assembled and sealed on the sealed cabin 13, and the use requirements in the gas meter can be met.

The upper bracket 11 has an inner bracket 111, the spool assembly 20 is attached to an inner wall 1111 of the inner bracket 111, and the spool assembly 20 is guided to reciprocate relative to the valve port 101 by guiding the contact between the spool assembly 20 and the inner wall 1111, so that the movement of the spool assembly 20 can be guided.

In summary, the gas shutoff device and the gas meter of the present application, through reasonable structural arrangement, ensure that the gas introduced by the gas inlet connector 200 can flow out in time through the gas shutoff device 100, so as to ensure the smoothness of the gas flowing in the gas meter housing 300, and in this process, the flow of the gas is not affected.

The features of the above embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the features in the above embodiments are not described, but should be construed as being within the scope of the present specification as long as there is no contradiction between the combinations of the features.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be taken as limiting the present invention, and that suitable modifications and variations of the above embodiments are within the scope of the invention as claimed.

Claims (10)

1. A gas cutting device is arranged on a gas meter and used for controlling the on/off of an air inlet (201) on the gas meter; the fuel gas cutoff device (100) is characterized by comprising a fixed support (10), a valve core assembly (20) and a valve core driving mechanism (30), wherein the valve core driving mechanism (30) is installed on the fixed support (10), a valve port (101) is formed in the fixed support (10), and the valve port (101) is communicated with the gas inlet (201); the valve core assembly (20) is arranged in the fixed support (10) and is connected with the valve core driving mechanism (30) so as to control the on/off of the valve port (101) under the driving of the valve core driving mechanism (30);

the clearance area corresponding to the maximum clearance between the valve core assembly (20) and the opening edge (1011) of the valve port (101) is larger than or equal to the area of the cross section of the valve port (101).

2. The gas shut-off device according to claim 1, characterized in that the cross section of the valve port (101) is circular, and the maximum clearance between the valve core assembly (20) and the opening edge (1011) is equal to or larger than one quarter of the diameter of the valve port (101).

3. Gas shut-off device according to claim 1, characterized in that the spool assembly (20) comprises a spool (21) and a gland (22), the gland (22) being fitted onto the spool (21);

the valve port (101) is sealed by the aid of the sealing convex ring (1012) arranged on the opening edge (1011), the sealing convex ring (1012) is arranged on the periphery of the valve port (101), and the valve port (101) is sealed by means of matching between the sealing convex ring (1012) and the sealing sleeve (22).

4. The gas shutoff device according to claim 3, wherein the valve element drive mechanism (30) comprises a motor (31), a drive sleeve (32) and a screw fitting (33), and the drive sleeve (32) is in transmission connection with the motor (31);

the thread matching piece (33) is fixedly installed in the valve core (21) and is in threaded connection with the thread matching piece (33) so as to control the valve core (21) to ascend and descend relative to the valve port (101) under the driving of the motor (31).

5. The gas shut-off device according to claim 4, characterized in that the driving sleeve (32) includes a sleeve portion (321) and a screw portion (322), the screw portion (322) being provided on the sleeve portion (321) along an axial direction of the sleeve portion (321) and being screw-connected with the screw-fitting (33).

6. Gas shut-off device according to claim 4, characterized in that said fixed support (10) comprises an upper support (11), a lower support (12) and a sealed enclosure (13), said sealed enclosure (13) being removably mounted to said upper support (11) by means of said lower support (12);

the motor (31) with the driving sleeve (32) all install to in the sealed cabin body (13), wherein, be equipped with first sealing washer (131) between driving sleeve (32) and the sealed cabin body (13), with right driving sleeve (32) with the sealed cabin body (13) assemble sealedly.

7. The gas shut-off device of claim 6, wherein the upper bracket (11) has an internal bracket (111), and wherein the spool assembly (20) is disposed against an internal wall (1111) of the internal bracket (111) to guide the reciprocating movement of the spool assembly (20) relative to the valve port (101) guided by contact between the spool assembly (20) and the internal wall (1111).

8. A gas meter comprises a gas meter shell (300), a gas inlet connector (200) and a gas cutting device, wherein the gas inlet connector (200) and the gas cutting device are both installed on the gas meter shell (300), an air inlet hole (201) is formed in the gas inlet connector (200) inwards, and the gas cutting device is used for controlling the on/off of the air inlet hole (201); characterized in that the gas shut-off device is provided as a gas shut-off device (100) according to any one of claims 1 to 7.

9. The gas meter according to claim 8, wherein the fixing support (10) is detachably mounted on the gas meter housing (300), and a sealing pressing plate (401) is arranged between the fixing support (10) and the gas meter housing (300) to seal the fixing support (10) and the gas meter housing (300) in an assembling manner.

10. The gas meter according to claim 8, wherein the fixed bracket (10) has a connecting inner housing (102), the valve port (101) being provided on the connecting inner housing (102);

the connecting inner sleeve (102) partially extends into the air inlet connector (200), wherein a second sealing ring (402) is arranged between the connecting inner sleeve (102) and the air inlet connector (200) to assemble and seal the air inlet connector (200) and the connecting inner sleeve (102).

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