CN218377825U - Double-channel gas control valve and gas meter - Google Patents

Abstract

The present disclosure relates to a two-channel gas control valve and a gas meter. The dual channel gas control valve includes a housing, first and second switch members housed in the housing, and first and second drive mechanisms housed in the housing. The housing is formed with a first passage and a second passage that extend through the housing. Wherein the first switch member is configured to move between an open position not blocking the first passage and a closed position blocking the first passage, and the second switch member is configured to move between an open position not blocking the second passage and a closed position blocking the second passage. Wherein the first drive mechanism is configured to drive the first switch member between the open position and the closed position and the second drive mechanism is configured to drive the second switch member between the open position and the closed position.

Description

Double-channel gas control valve and gas meter

Technical Field

The present disclosure relates to a two-channel gas control valve and a gas meter.

Background

The gas control valve can be switched between an open state in which the gas flow passage is opened and a closed state in which the gas flow passage is closed. Reducing the probability of a gas control valve closing failure is an important aspect of preventing gas leakage and improving the reliability of the gas control valve.

Gas control valves are widely used in a variety of fields, particularly in gas meters. However, the safety of the gas meter still needs to be improved, gas explosion accidents caused by gas leakage occur every year, the root of the gas explosion is the gas leakage, and when the gas leakage reaches a certain concentration, explosion can occur when a fire source is met. According to the investigation, the causes of gas leakage mainly include four: firstly, after the kitchen range stews soup or boils water for a long time, forgets to close a switch of the kitchen range (especially for the old), and the water boils out to extinguish flame and cause leakage; secondly, the stove switch is failed; thirdly, the connection rubber pipe is aged or is not firmly connected to cause leakage; and fourthly, individual users carry out illegal modification on the gas meter.

There is a need for a gas control valve with higher safety and a gas meter with higher safety.

The best modes for carrying out the present disclosure will be described in more detail below with reference to the accompanying drawings so that the features and advantages of the present disclosure can be readily understood.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned problems and needs, the present disclosure provides an improved two-channel gas control valve and a gas meter, which solve the above-mentioned problems and bring about other technical effects due to the following technical features.

At least one embodiment of the present disclosure provides a dual channel gas control valve, wherein the dual channel gas control valve includes a housing, first and second switch members housed in the housing, and first and second drive mechanisms housed in the housing. The housing is formed with a first passage and a second passage that penetrate the housing and are parallel to each other. Wherein the first switch member is configured to move along the first slide between an open position not blocking the first passageway and a closed position blocking the first passageway and the second switch member is configured to move along the second slide between an open position not blocking the second passageway and a closed position blocking the second passageway. Wherein the first drive mechanism is configured to drive the first switch member between the open position and the closed position, and the second drive mechanism is configured to drive the second switch member between the open position and the closed position.

According to a preferred embodiment, the first and second ramps are located on either side of the center of the two-way gas control valve.

According to a preferred aspect, the housing includes a first housing half and a second housing half that form a housing chamber that houses the first switch member, the second switch member, the first drive mechanism, and the second drive mechanism. Wherein the first half shell is formed with a first channel first portion and a second channel first portion, and the second half shell is formed with a first channel second portion and a second channel second portion, wherein the first channel first portion of the first half shell and the first channel second portion of the second half shell together form the first channel, and the second channel first portion of the first half shell and the second channel second portion of the second half shell together form the second channel.

According to a preferred solution, the first drive mechanism comprises: a first motor; a first lead screw that is driven to rotate by the first motor; a first threaded sleeve having internal threads and being sleeved on the first lead screw and connected to the first switch member such that rotation of the first lead screw drives the first switch member to move between an open position and a closed position via translation of the first threaded sleeve. The second drive mechanism includes: a second motor; a second lead screw that is driven to rotate by the second motor; a second threaded sleeve having internal threads and being sleeved on the second lead screw and being connected to the second switch member such that rotation of the second lead screw drives the second switch member to move between the open position and the closed position via translation of the second threaded sleeve.

According to a preferred aspect, the two-channel gas control valve further comprises a gas sensor mounted to sense one or more gas parameters of the gas at the first channel.

According to a preferred embodiment, the gas sensor is a temperature and pressure sensor, and the one or more gas parameters are temperature and pressure of the gas.

According to a preferred aspect, the dual channel gas control valve further comprises a cover mounted to the first housing half, the first channel passing through the first housing half and the cover. The cover body has a mounting groove formed in an outer surface of the cover body facing away from the first half case, the gas sensor is disposed in the mounting groove, and a sensing portion of the gas sensor communicates with the first passage through a communication hole in the cover body.

According to the preferred scheme, a positioning column is arranged in the mounting groove, and positioning holes matched with the positioning column are formed in the gas sensor and the cover plate.

According to a preferred aspect, the dual channel gas control valve further comprises a cover plate covering the gas sensor to secure the gas sensor to the cover.

According to a preferable aspect, the sensing portion protrudes to be inserted into the communication hole, and a shape of the sensing portion matches a shape of an opening of the communication hole.

According to a preferable aspect, the communication hole includes a first hole portion and a second hole portion extending in the extending direction of the first passage, the sensing portion protrudes to be inserted into the first hole portion of the communication hole, and a shape of the sensing portion matches a shape of the first hole portion of the communication hole, the second hole portion is connected to the first hole portion, and the second hole portion is configured to be opened to the first passage and to be offset from the first hole portion in a horizontal plane perpendicular to the extending direction of the first passage.

According to a preferred aspect, the two-way gas control valve further comprises a first bellows and a second bellows. A first bellows is disposed around the first lead screw, and has one end connected to a housing of a first motor and the other end connected to the first threaded sleeve. The second bellows is disposed around the second lead screw, and has one end connected to the housing of the first motor and the other end connected to the second thread bushing.

According to a preferable scheme, a connecting part for connecting to a first switch component is arranged on the side wall of the first threaded sleeve, and a connecting part for connecting to a second switch component is arranged on the side wall of the second threaded sleeve.

At least one embodiment of the present disclosure provides a gas meter, which includes a gas meter housing, a gas meter core for measuring the flow rate of gas, and a two-channel gas control valve according to any one of the above. The gas meter core and the two-channel gas control valve are contained in the gas meter shell. The gas meter shell comprises a gas meter shell gas flow inlet and a gas meter shell gas flow outlet, the gas meter shell gas flow inlet is communicated with a first channel of the double-channel gas control valve, and the gas meter shell gas flow outlet is communicated with a second channel of the double-channel gas control valve, so that gas can enter a machine core of the gas meter through the gas meter shell gas flow inlet and the first channel of the double-channel gas control valve, and leave the gas meter from the machine core through the second channel of the double-channel gas control valve and the gas meter shell gas flow outlet.

According to a preferred scheme, the first switch component is configured to be in an open state when the gas meter is in a normal working state so as to allow gas to flow through the gas meter, and is in a close state when the gas meter is in a normal non-working state so as to cut off the gas flowing through the gas meter. The second switch component is configured to be in a normally open state and is in a closed state only when the first switch component is failed so as to cut off the gas flowing through the gas meter.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present disclosure, and therefore should not be considered as limiting the scope of protection, and for those skilled in the art, other related drawings may be obtained from the drawings without inventive effort.

FIG. 1 illustrates a perspective view of a dual channel gas control valve according to an embodiment of the present disclosure;

FIG. 2 illustrates various angled views of the two-way gas control valve of FIG. 1;

FIG. 3 illustrates an exploded perspective view of the dual channel gas control valve shown in FIG. 1;

FIG. 4A illustrates an exploded perspective view of the sealing member, cover, gas sensor and cover plate of the gas control valve shown in FIG. 1;

FIG. 4B illustrates a specific structure of a sealing member of the gas control valve shown in FIG. 1;

FIG. 5 illustrates an exploded perspective view of the threaded sleeve of the two-way gas control valve shown in FIG. 1;

FIG. 6 illustrates a perspective view of the bellows of the two-channel gas control valve shown in FIG. 1;

FIG. 7 illustrates a perspective view of a first connector of the dual channel gas control valve shown in FIG. 1;

FIG. 8 illustrates a perspective view of a second connection of the two-way gas control valve shown in FIG. 1;

FIGS. 9A and 9B show a perspective view and a top view, respectively, of the cover shown in FIG. 1;

FIGS. 9C and 9D show cross-sectional views taken along lines B-B and A-A of FIG. 9B, respectively;

fig. 9E shows an enlarged view of the circled portion in fig. 9D.

List of reference numerals

First half shell 111 screw 154/154'

Accommodating recess 1111 thread bushing 155/155'

Second housing half 112 first rectangular recess 1551

Second rectangular groove 1552 of cover body 113/113

Radial flange 1131 rectangular wall 1553

Locating column 1134 bellows 157/157'

First hole portion 11331 first flange portion 1571

Second hole portion 11332 second flange portion 1572

Mounting groove 1132 first connector 158/158'

Cover plate 114 first lug 1581

First channel 115 first projection 1582

Second channel 116 first annular portion 131

Base 121/121' central aperture 133

Second connecting pieces 159/159 'of cover plates 122/122'

Second lug 1591 of seal member 130/130

Second annular portion 132 snaps through opening 1592

Gas sensor 140

Motor casing 151/151'

Clamping groove 1511

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item preceding the word covers the element or item listed after the word and its equivalents, without excluding other elements or items. "upper", "lower", "left", "right", etc. are used merely to indicate relative positioning, and when the absolute positioning of the object being described is changed, the relative positioning may also be changed accordingly.

In general, the dual channel gas control valve of the present disclosure includes a housing, first and second switching members housed in the housing, and first and second drive mechanisms housed in the housing.

The housing is formed with a first channel 115 and a second channel 116 disposed through the housing and parallel to each other. The first channel 115 and the second channel 116 are preferably located at both ends of the housing. The first switch member is configured to move between an open position not blocking the first passage 115 and a closed position blocking the first passage, and the second switch member is configured to move between an open position not blocking the second passage 116 and a closed position blocking the second passage. A first drive mechanism is configured to drive the first switch member between the open position and the closed position, and a second drive mechanism is configured to drive the second switch member between the open position and the closed position.

Thus, the dual-channel gas control valve disclosed by the invention is of an integrated dual-valve structure, and two through channels are arranged on the same shell. As will be described later, these two channels can be used as an inlet channel and an outlet channel, respectively, when installed in a gas meter. The dual channel gas control valve has two independent sets of closure mechanisms, i.e., a first drive mechanism can be used to drive the first switch member to move between the open and closed positions and a second drive mechanism can be used to drive the second switch member to move between the open and closed positions, and the two sets of drive mechanisms are independently movable so that the two switch members can be independently opened and closed.

Preferred embodiments of the present disclosure are described below with reference to the accompanying drawings. The drawings define a "first vertical direction" (denoted by "Z"), a "second horizontal direction" (denoted by "X") perpendicular to the first vertical direction Z, and a "third horizontal direction" (denoted by "Y") perpendicular to the first vertical direction Z and the second horizontal direction X. Wherein fig. 1 illustratesbase:Sub>A perspective view ofbase:Sub>A dual channel gas control valve according to an embodiment of the present disclosure, fig. 2 illustrates various angled views of the dual channel gas control valve shown in fig. 1, fig. 3 illustrates an exploded perspective view of the dual channel gas control valve shown in fig. 1, fig. 4A illustrates an exploded perspective view ofbase:Sub>A seal member,base:Sub>A cover,base:Sub>A gas sensor, andbase:Sub>A cover plate of the dual channel gas control valve shown in fig. 1, fig. 4B illustratesbase:Sub>A specific structure of the seal member, fig. 5 illustrates an exploded perspective view ofbase:Sub>A threaded bushing of the dual channel gas control valve shown in fig. 1, fig. 6 illustratesbase:Sub>A perspective view ofbase:Sub>A bellows of the dual channel gas control valve shown in fig. 1, fig. 7 illustratesbase:Sub>A perspective view ofbase:Sub>A first connection piece of the dual channel gas control valve shown in fig. 1, fig. 8 illustratesbase:Sub>A perspective view ofbase:Sub>A second connection piece of the dual channel gas control valve shown in fig. 1, fig. 9A and 9B illustratebase:Sub>A perspective view andbase:Sub>A top view of the cover shown in fig. 1, fig. 9C and 9D illustrate cross-sectional views taken along lines B-B andbase:Sub>A-base:Sub>A linebase:Sub>A-E, respectively, and an enlarged view ofbase:Sub>A circle 9D showingbase:Sub>A circle portion of fig. 9D.

As shown in fig. 1-3, the housing of the dual channel gas control valve preferably includes a first housing half 111 (also referred to herein as an "upper housing") and a second housing half 112 (also referred to herein as a "lower housing"). The first and second case halves 111 and 112 are joined by a fastener such as a screw to form a housing chamber in which the first and second switch members, the first and second drive mechanisms, and other auxiliary components can be housed. Wherein the first half shell is formed with a first channel first portion 115-1 and a second channel first portion 116-1, and the second half shell is formed with a first channel second portion 115-2 and a second channel second portion 116-2, wherein the first channel first portion of the first half shell and the first channel second portion of the second half shell together form the first channel 115, and the second channel first portion of the first half shell and the second channel second portion of the second half shell together form the second channel 116.

Preferably, the first driving mechanism includes a first motor, a first lead screw driven by the first motor to rotate, and a first thread bushing having an internal thread and sleeved on the first lead screw. A first threaded sleeve is connected to the first switch member. Thus, rotation of the first lead screw translates via the first threaded sleeve to move the first switch member between the open and closed positions. Wherein the housing is provided with a first slide for the first switch member to slide and a second slide for the second switch member to slide. Preferably, the first slideway is formed by a sliding track on the first half-shell and a corresponding sliding track provided on the second half-shell. Similarly, the second slideway is formed by the other sliding track on the first half-shell and the sliding track corresponding to the other sliding track arranged on the second half-shell. Preferably, the first and second ramps are located on either side of the center of the two-way gas control valve.

Similarly, the second driving mechanism comprises a second motor, a second lead screw driven by the second motor to rotate, and a second thread bush having an internal thread and sleeved on the second lead screw. A second threaded sleeve is connected to the second switch member. Thus, rotation of the second lead screw translates via the second threaded sleeve to move the second switch member between the open and closed positions. Wherein the first half-shell or the second half-shell may be provided with a slide rail supporting the second switch member to slide.

The two sets of driving mechanisms have the same motion principle, namely, the motor drives the lead screw to rotate (driven by the transmission assembly or directly driven), and the threaded sleeve is sleeved on the rotating lead screw and is also connected to the switch component. The housing may be provided with a slide for translational movement of the switch member between the open and closed positions. Since the switch member is limited by the housing to be movable only in translation, the threaded sleeve is limited to be movable only in the second horizontal direction X and not rotatable about the lead screw. It should be noted that the two sets of driving mechanisms may differ in structure.

Preferably, as shown in fig. 3 and 5, the first switch member may include a base 121 and a cover plate 122 disposed on the base 121, and the first screw cap may be particularly coupled to the base 121 of the first switch member, and similarly, the second switch member may include a base 121 'and a cover plate 122' disposed on the base 121', and the second screw cap may be particularly coupled to the base 121' of the second switch member. Alternatively, the first switch member may be a unitary structure.

Preferably, the two-way gas control valve further comprises a first bellows 157 and a second bellows 157'. A first bellows is disposed around the first lead screw and has one end connected to the motor housing and the other end connected to the first threaded sleeve 155. A second bellows is disposed around the second lead screw and has one end connected to the motor housing and the other end connected to the second threaded sleeve 155'.

The manner of mounting between the bellows, threaded sleeve, etc. of the drive mechanism is described in detail below with reference to fig. 3 and 6-8. In the drawings, components having the same name are denoted by the same reference numerals, but are distinguished from each other by a superscript following the numeral. For example, 157 and 157 'are both bellows, which are referred to as first bellows 157 and second bellows 157', respectively, as they are used for the first drive mechanism and the second drive mechanism, respectively. Hereinafter, in order to avoid repetitive description, the "first" and "second" are not distinguished from each other for the components corresponding to the same name.

Referring to the drawings, a bellows 157/157 'is disposed around a lead screw 154/154' such that one end thereof is connected to a motor housing 151/151 'through a first connector 158/158', and the other end thereof is connected to a threaded sleeve 155/155 'through a second connector 159/159'. The bellows 157/157 'may have a first flange portion 1571 and a second flange portion 1572, the first connector 158/158' being snap-fit to the motor housing 151 to sandwich the first flange portion 1571 between the motor housing 151 and the first connector 158/158', and the second connector 159/159' being snap-fit to the threaded sleeve 155/155 'to sandwich the second flange portion 1572/1572' between the threaded sleeve 155/155 'and the second connector 159/159'. The first connector 158/158' has a first disc-shaped body and at least two (e.g., two, three, or more) first lugs 1581 each having a first projection 1582 that projects radially inward. The motor housing 151/151 'has a cylindrical portion in which a bearing (not shown) carrying the lead screw 154/154' can be accommodated. The motor housing 151/151' is provided on an outer surface thereof with a catching groove 1511 corresponding to the first projection 1582. The first projection 1582 of the first connector 158/158 'is snapped into the snap groove 1511 such that the first flange portion 1571 of the bellows 157/157' is secured between the cylindrical portion and the first disc-shaped body. The second connector 159/159' has a second disc-shaped body and at least two (e.g., two, three, or more) second lugs 1591, each second lug 1591 having a snap opening 1592 disposed therein. Clamping protrusions 1554 corresponding to the clamping openings 1592 are arranged on the outer surface of the threaded sleeve. The snap protrusions 1554 of the threaded sleeve 155/155' snap into the snap interface 1592 such that the second flange portion 1572 of the bellows 157/157' is secured between the threaded sleeve 155/155' and the second disc-shaped body. The bellows 157/157 'is connected between the motor housing 151/151' and the threaded sleeve 155/155 'by the first and second connectors 158/158' and 159/159', so that the assembly of the bellows 157/157' is more convenient and reliable.

Preferably, a side wall of the first threaded sleeve 155 is provided with a connection portion for connecting to a first switch member, and a side wall of the second threaded sleeve 155' is provided with a connection portion for connecting to a second switch member. Referring specifically to fig. 5, the connection on the sidewall of the threaded sleeve 155/155' includes a first rectangular recess 1551, a second rectangular recess 1552, and a rectangular wall 1553 between the first rectangular recess 1551 and the second rectangular recess 1552 in the second horizontal direction X. The switch member may be provided with connection protrusions (not shown) engaged into the first and second rectangular grooves of the screw boss, respectively. The provision of such a connection facilitates a reliable connection and a simple assembly of the switching element with the threaded sleeve 155/155'.

Preferably, one cover 113 is included at the first channel mounted to the first half shell and the other cover 113' is included at the second channel mounted to the second half shell. Each cover may be joined to a respective half shell by fasteners such as screws. The first channel 115 passes through the first half shell and the cover 113 and the second channel passes through the second half shell and the second cover.

Preferably, the cover 113 has a mounting groove 1132 formed in an outer surface of the cover facing away from the first housing half for mounting the gas sensor 140.

Preferably, a gas sensor 140 is mounted to sense one or more gas parameters of the gas at the first passage 115 (which may be an inlet passage when mounted to a gas meter). Preferably, the gas sensor is a temperature and pressure sensor and the one or more gas parameters are temperature and pressure of the gas. The temperature and pressure of the first channel can be obtained through the gas sensor so as to be used for judging gas leakage.

Referring specifically to fig. 3, the gas sensor is disposed in a mounting groove of the cover 113, and a sensing portion of the gas sensor communicates with the first channel through a communication hole in the cover.

Preferably, the dual channel gas control valve is further provided with a cover plate 114 for covering the gas sensor 140 to fix the gas sensor to the cover 113. The gas sensor 140 is configured to sense one or more gas parameters of the gas at the first channel 115.

Specifically, gas sensor 140 may be disposed in a mounting groove 1132 formed in an outer surface of radial flange 1131 of cover 113 that faces away from seal member 130, of cover 113. The cover 113 also has a communication hole 1133 having one end disposed in the mounting groove 1132 to be opened to a sensing portion of the gas sensor 140 and the other end extended to an inner surface of the radial flange 1131 facing the sealing member 130 to communicate with the first passage 115. A sensing portion of the gas sensor 140 is in gas communication with the first channel 115 through the communication hole 1133 to sense gas parameters such as temperature and pressure of the gas. In the present embodiment, the communication hole 1133 extends in a bent manner, rather than in a straight line, which helps prevent leakage of gas. Specifically, the communication hole 1133 includes a first hole portion 11331 extending in the first vertical direction Z and a second hole portion 11332 extending in the first vertical direction Z and connected to the first hole portion.

The sensing portion protrudes to be inserted into the first hole portion 11331 of the communication hole 1133, and the shape of the sensing portion matches the shape of the first hole portion 11331 of the communication hole 1133 to avoid leakage of gas. The second bore portion 11332 is configured to open to an inner surface of the radial flange 1131 facing the seal member 130 to communicate with the first channel 115. In order to extend the communication hole 1133 while being bent, the second hole portion 11332 is offset from the first hole portion 11331 along a horizontal plane perpendicular to the first vertical direction. Further, the gas sensor 140 may be covered with the cover sheet 114 to fix the gas sensor 140 to the cover 113. In the present embodiment, the positioning pillars 1134 are disposed in the mounting groove 1132, and the gas sensor 140 and the cover sheet 114 are disposed with positioning holes matched with the positioning pillars 1134. In this way, the gas sensor 140 and the cover sheet 114 can be conveniently positioned and held. For example, the gas sensor 140 may be a pressure sensor. For example, the gas valve may be disposed in a housing of the gas meter such that the first passage 115 of the gas valve communicates with a gas inlet of the housing. When the gas meter is removed (e.g., in the event of abnormal operation), the sensing portion of the gas sensor 140 will lose pressure. When the gas sensor 140 senses this loss of pressure, it may indicate that the gas meter is removed or retrofitted. For example, the gas sensor 140 may be a temperature and pressure sensor as previously described. Since the pressure and the temperature of the gas are related to each other, the pressure and the temperature of the gas at the portion can be sensed at the same time. By analyzing both the temperature and the pressure of the gas, it can be more accurately determined whether the gas meter is disassembled and retrofitted.

Referring to fig. 4B, the sealing member 130 may include first and second annular portions 131 and 132, the first annular portion 131 extending radially from the second annular portion 132, and a central aperture 133 extending through the first and second annular portions 131 and 132. The first half case 111 is provided with a receiving groove 1111 around the air flow passage (specifically, the first passage 115) at this position. Cover 113 has a radial flange 1131 surrounding the gas flow passage. The first annular portion 131 of the sealing member 130 is received in the receiving recess 1111 and covered by the radial flange 1131 of the cover 113 such that the first annular portion 131 is sandwiched between the bottom wall of the receiving recess 1111 and the radial flange 1131 of the cover 113 and such that the central aperture 133 of the sealing member 130 is aligned with the gas flow passage for the gas to flow through. When the opening and closing member is moved to the position for closing the air flow passage, the sealing member 130 is pressed by the closing plate 122 of the opening and closing member, thereby sealing the air flow passage.

In the present disclosure, the first passage 115 and the second passage 116 are each a cylindrical passage extending in the first vertical direction Z, which are arranged coaxially with each other. While the switching member is moved in a first horizontal direction X perpendicular to the first vertical direction Z to close the gas flow channel, i.e. to close the gas flow through the first and second channels. Therefore, the flow of the gas does not need to change direction, and the pressure loss of the gas is reduced.

The present disclosure further provides a gas meter, which includes a gas meter housing, a gas meter core for measuring a flow rate of gas, and the two-channel gas control valve, wherein the gas meter core and the two-channel gas control valve are accommodated in the gas meter housing. The gas meter shell comprises a gas meter shell gas flow inlet and a gas meter shell gas flow outlet, the gas meter shell gas flow inlet is communicated with a first channel of the double-channel gas control valve, and the gas meter shell gas flow outlet is communicated with a second channel of the double-channel gas control valve, so that gas can enter a machine core of the gas meter through the gas meter shell gas flow inlet and the first channel of the double-channel gas control valve and leave the gas meter from the machine core through the second channel of the double-channel gas control valve and the gas meter shell gas flow outlet.

The first switch component is configured to be in an open state when the gas meter is in a normal working state so as to allow gas to flow through the gas meter, and is in a close state when the gas meter is in a normal non-working state so as to cut off the gas flowing through the gas meter. The second switch component is configured to be in a normally open state and is in a closed state only when the first switch component is failed so as to cut off the gas flowing through the gas meter. Therefore, the probability of failure of gas closing of the gas meter can be greatly reduced, gas leakage is prevented, and the reliability of the double-channel gas control valve and the reliability of the gas meter are improved.

The scope of the present disclosure is not defined by the above-described embodiments but is defined by the appended claims and equivalents thereof.

Claims (15)

1. A dual channel gas control valve, comprising:

a housing formed with a first channel (115) and a second channel (116) disposed through the housing and parallel to each other, and provided with a first slide and a second slide;

a first switch member and a second switch member housed in the housing, wherein the first switch member is configured to slide along the first slideway between an open position not blocking the first channel (115) and a closed position blocking the first channel (115), and the second switch member is configured to slide along the second slideway between an open position not blocking the second channel (116) and a closed position blocking the second channel (116);

a first drive mechanism and a second drive mechanism housed in the housing, wherein the first drive mechanism is configured to drive the first switch member to move between the open position and the closed position, and the second drive mechanism is configured to drive the second switch member to move between the open position and the closed position.

2. The dual channel gas control valve of claim 1, wherein the first and second ramps are located on opposite sides of a center of the dual channel gas control valve.

3. The dual channel gas control valve of claim 1,

the housing comprises a first housing half (111) and a second housing half (112), the first housing half (111) and the second housing half (112) forming a receiving chamber receiving a first switch member, a second switch member, a first drive mechanism and a second drive mechanism,

the first half shell (111) is formed with a first channel first portion (115-1) and a second channel first portion (116-1), the second half shell (112) is formed with a first channel second portion (115-2) and a second channel second portion (116-2), wherein the first channel first portion (115-1) of the first half shell (111) and the first channel second portion (115-2) of the second half shell (112) together form the first channel (115), and the second channel first portion (116-1) of the first half shell (111) and the second channel second portion (116-2) of the second half shell (112) together form the second channel (116).

4. The dual channel gas control valve of claim 1,

the first drive mechanism includes:

a first motor;

a first lead screw (154) that is driven to rotate by the first motor;

a first threaded sleeve (155) having internal threads and being sleeved on the first lead screw (154) and connected to the first switch member such that rotation of the first lead screw (154) translates via the first threaded sleeve to move the first switch member between an open position and a closed position;

the second drive mechanism includes:

a second motor;

a second lead screw (154') driven to rotate by the second motor;

a second threaded sleeve (155 ') internally threaded and sleeved over the second lead screw (154 ') and connected to the second switch member such that rotation of the second lead screw (154 ') translates via the second threaded sleeve to move the second switch member between the open and closed positions.

5. The dual channel gas control valve of claim 3, further comprising:

a gas sensor (140), the gas sensor (140) mounted to sense one or more gas parameters of the gas at the first channel (115).

6. The dual channel gas control valve of claim 5, wherein the gas sensor (140) is a temperature and pressure sensor and the one or more gas parameters are temperature and pressure of the gas.

7. The dual channel gas control valve of claim 5,

the dual channel gas control valve further comprising a cover (113) mounted to the first housing half (111), the first channel (115) passing through the first housing half (111) and the cover (113),

the cover (113) has a mounting groove formed in an outer surface of the cover (113) facing away from the first half case (111), the gas sensor (140) is disposed in the mounting groove, and a sensing portion of the gas sensor (140) communicates with the first channel (115) through a communication hole (1133) in the cover (113).

8. The dual channel gas control valve of claim 7,

the dual channel gas control valve further includes a cover plate (114), the cover plate (114) covering the gas sensor (140) to secure the gas sensor (140) to the cover (113).

9. The dual channel gas control valve of claim 8,

and a positioning column (1134) is arranged in the mounting groove, and positioning holes matched with the positioning column are formed in the gas sensor (140) and the cover plate (114).

10. The dual channel gas control valve of claim 7,

the sensing portion protrudes to be inserted into the communication hole (1133), and the shape of the sensing portion matches the shape of the opening of the communication hole (1133).

11. The dual channel gas control valve of claim 10,

the communication hole (1133) includes a first hole portion (11331) and a second hole portion (11332) extending in the extending direction of the first passage (115),

the sensing portion protrudes to be inserted into a first hole portion (11331) of the communication hole (1133), and a shape of the sensing portion matches a shape of the first hole portion (11331) of the communication hole (1133),

the second bore portion (11332) is connected to the first bore portion (11331),

the second aperture portion (11332) is configured to open to the first channel (115) and to be offset from the first aperture portion (11331) along a horizontal plane perpendicular to the direction of extension of the first channel (115).

12. The dual channel gas control valve of claim 4,

the two-way gas control valve further comprises a first bellows (157) and a second bellows (157'),

a first bellows (157) is disposed around the first lead screw (154) and has one end connected to a first motor housing (151) and the other end connected to the first threaded sleeve (155),

a second bellows (157 ') is disposed around the second lead screw (154') and has one end connected to a second motor housing (151 ') and the other end connected to the second threaded sleeve (155').

13. The dual channel gas control valve of claim 4,

a connecting part for connecting to a first switch component is arranged on the side wall of the first threaded sleeve (155), and a connecting part for connecting to a second switch component is arranged on the side wall of the second threaded sleeve (155').

14. A gas meter, characterized by comprising a gas meter shell, a gas meter core for measuring the flow of gas and a two-channel gas control valve according to any one of claims 1-12,

the gas meter core and the two-channel gas control valve are accommodated in the gas meter shell;

the gas meter shell comprises a gas meter shell gas flow inlet and a gas meter shell gas flow outlet, the gas meter shell gas flow inlet is communicated with a first channel (115) of the two-channel gas control valve, and the gas meter shell gas flow outlet is communicated with a second channel (116) of the two-channel gas control valve, so that gas can enter a core of the gas meter through the gas meter shell gas flow inlet and the first channel (115) of the two-channel gas control valve and leave the gas meter from the core through the second channel (116) of the two-channel gas control valve and the gas meter shell gas flow outlet.

15. A gas meter as claimed in claim 14, wherein the first switch means is configured to be in an open state when the gas meter is in a normal operating state to allow gas to flow through the gas meter, and in a closed state when the gas meter is in a normal non-operating state to shut off gas flowing through the gas meter;

the second switch component is configured to be in a normally open state and is in a closed state only when the first switch component is failed so as to cut off the gas flowing through the gas meter.

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