CN218510247U - Single-power source gas control valve and gas meter - Google Patents

Abstract

The present disclosure relates to a single power source gas control valve and a gas meter. The single power source gas control valve comprises a shell, a power source and two sets of channel opening and closing actuating mechanisms. A first channel and a second channel are formed through the housing in parallel with each other. The power source is housed within the housing. The two sets of channel opening and closing executing mechanisms are directly or indirectly connected to the power source, wherein the first channel opening and closing executing mechanism opens and closes the first channel under the driving of the power source, and the second channel opening and closing executing mechanism opens and closes the second channel under the driving of the power source. Each set of passage opening and closing actuator includes a drive mechanism directly or indirectly connected to the power source and a switch member moved by the corresponding drive mechanism between an open position not blocking airflow through the corresponding passage and a closed position blocking airflow through the corresponding passage. The driving mechanism of each channel opening and closing actuating mechanism is driven by the power source to synchronously open and close the corresponding channel.

Description

Single-power source gas control valve and gas meter

Technical Field

The present disclosure relates to a single power source gas control valve and a gas meter.

Background

At present, gas meters are widely used. In general, a gas meter mainly includes a housing, a gas meter movement located in the housing for measuring a flow rate of gas, and a valve structure for selectively allowing and shutting off a flow of gas.

The gas leakage accident caused by the gas meter fault exists continuously all the time, and the gas explosion accident caused by the gas leakage also occurs all the time.

Therefore, a gas control valve with higher safety and a gas meter with higher safety are required.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned problems and needs, the present disclosure provides a single power source 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.

The single-power-source gas control valve provided by the disclosure comprises a shell, a power source and two sets of channel opening and closing actuating mechanisms. Two passages for the passage of an air flow are formed through the housing, including a first passage and a second passage, wherein the first passage and the second passage are arranged parallel to each other. A power source is housed within the housing. The two sets of channel opening and closing executing mechanisms are both directly or indirectly connected to the power source, wherein a first channel opening and closing executing mechanism of the two sets of channel opening and closing executing mechanisms is configured to open and close a first channel under the driving of the power source, and a second channel opening and closing executing mechanism of the two sets of channel opening and closing executing mechanisms is configured to open and close a second channel under the driving of the power source. Each set of passage opening and closing actuating mechanism comprises a driving mechanism and a switch component, wherein the driving mechanism is directly or indirectly connected to the power source, and the switch component is configured to move between an opening position not blocking airflow through the corresponding passage and a closing position blocking airflow through the corresponding passage under the driving of the corresponding driving mechanism. And the driving mechanism of each channel opening and closing actuating mechanism is driven by the power source to synchronously open and close the corresponding channel.

According to a preferred aspect, the single power source gas control valve includes a first sensor mounted to sense one or more gas parameters of the gas at the first passage.

According to a preferred aspect, the single-power-source gas control valve includes a first passage interface engaged with the housing, the first passage passing through the housing and the first passage interface, the first sensor being disposed in the first passage interface.

According to a preferable mode, a mounting groove is provided in an outer surface of the first passage interface member facing away from the housing, the first sensor is disposed in the mounting groove, and the sensing portion of the first sensor communicates with the first passage through a communication hole in the first passage interface member.

According to a preferred aspect, the single power source gas control valve further comprises a first cover flap, the first sensor being located between the first cover flap and the first passage interface member.

According to a preferred version, the first sensor is a temperature and pressure sensor to measure the temperature and pressure of the gas passing through the first passage.

According to a preferred aspect, the single power source gas control valve further includes a second sensor mounted to the housing adjacent the second passage.

According to a preferred aspect, the single power source gas control valve further comprises a second cover plate, and the second sensor is mounted between the second cover plate and the housing.

According to a preferred solution, the drive mechanism comprises: the power source is configured to provide a translational motion to the drive screw, and the slider is coupled to the drive screw and the switch member to transmit the translational motion of the drive screw to the switch member.

According to a preferred solution, the slider is provided on its side with a connection portion for connection to a switching member.

According to a preferred embodiment, the slider is provided with a transmission hole coinciding with the axial direction of the drive screw and a slit perpendicular to the transmission hole, the locking plate being arranged in the slit, wherein the drive end of the drive screw passes through the transmission hole of the slider to cooperate with both the locking plate and the slider, such that the drive screw is fixed with the slider in the axial direction.

According to a preferred solution, the drive mechanism comprises a bellows of a length that is telescopic, the bellows being arranged around the drive screw and having one end fixed with respect to the housing and the other end connected to the end of the drive screw that is close to the slide.

According to a preferable scheme, the driving mechanism comprises a transmission sleeve configured to perform a rotational motion under the driving of the power source, wherein the transmission screw is at least partially disposed in the transmission sleeve, and an engagement structure with the transmission screw is disposed in the transmission sleeve, so that the rotational motion of the transmission sleeve drives the transmission screw to perform a translational motion.

According to a preferred solution, the housing comprises a first half-housing and a second half-housing forming a housing chamber housing the power source, the first passage opening and closing actuator and the second passage opening and closing actuator, the first passage and the second passage both passing through both the first half-housing and the second half-housing.

According to a preferable mode, the first half housing includes a central raised portion and two side raised portions located on both sides of the central raised portion, the central raised portion defines a space for accommodating the power source, and the two side raised portions respectively define spaces for accommodating the two sets of passage opening and closing actuators.

According to a preferred version, the switch member comprises a base and a closure plate supported by the base, the closure plate being configured to close the respective channel.

The present disclosure also provides a gas meter, which includes a gas meter housing, a gas meter core for measuring a flow rate of a gas, and a single power source gas control valve according to any one of the above, wherein the gas meter core and the single power source 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 the first channel of the single-power-source gas control valve, and the gas meter shell gas flow outlet is communicated with the second channel of the single-power-source gas control valve, so that gas can enter the movement of the gas meter through the gas meter shell gas flow inlet and the first channel of the single-power-source gas control valve and leave the gas meter from the movement through the second channel of the single-power-source gas control valve and the gas meter shell gas flow outlet.

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.

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 single power source gas control valve according to an embodiment of the present disclosure;

FIG. 2A illustrates a top view of the single power source gas control valve shown in FIG. 1;

FIG. 2B illustrates a partially exploded perspective view of the single power source gas control valve shown in FIG. 1;

FIG. 3A illustrates a bottom view of the single power source gas control valve shown in FIG. 1;

FIG. 3B illustrates a partially exploded perspective view of the single power source gas control valve shown in FIG. 1;

FIGS. 4A and 4B are exploded views showing opening and closing members, respectively, which may be used in a single power source gas control valve, from different perspectives;

FIGS. 5A, 5B, 5C, 5D respectively illustrate the drive sleeve, drive screw, threaded sleeve and slide of FIG. 1 that may be used with the single power source gas control valve;

FIG. 6 illustrates an interior view of the single power source gas control valve with the first housing half removed;

FIG. 7 illustrates an exploded view of a single power source gas control valve.

List of reference numerals

100. Shell body

101. First half shell

1011. Center raised part

1012. Side raised part

102. Second half-shell

110. First channel

113. First channel interface

115. Second channel interface

120. The second channel

121. Base seat

122. Sealing plate

130. Sealing member

140. First sensor

141. First cover sheet

150. Second sensor

151. Second cover sheet

160. Power source

161. Transmission sleeve

162. Transmission lead screw

163. Sliding member

1631. Transfer hole

1632. Gap

1633. Connecting part

164. Lock sheet

170. Corrugated pipe

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.

The present disclosure first proposes a single power source gas control valve that is particularly suitable for use in a gas meter to control the shut-off and flow-through of the gas. Specifically, the single-power-source gas control valve may include a housing 100 with two passages formed through the housing 100 for gas flow therethrough, including a first passage 110 and a second passage 120. The power source 160 is accommodated in the housing 100. The single power source gas control valve further comprises two sets of channel opening and closing actuators, both of which are directly or indirectly connected to the power source 160, wherein a first channel opening and closing actuator of the two sets of channel opening and closing actuators is configured to open and close the first channel 110 under the driving of the power source 160, and a second channel opening and closing actuator of the two sets of channel opening and closing actuators is configured to open and close the second channel 120 under the driving of the power source 160. Wherein each set of passage opening and closing actuators comprises a respective drive mechanism directly or indirectly connected to the power source 160 and a switch member configured to move under the influence of the respective drive mechanism between an open position in which it does not block airflow through the respective passage and a closed position in which it blocks airflow through the respective passage. Wherein, the driving mechanism of each channel opening and closing actuator synchronously opens and closes the corresponding channel under the driving of the power source 160. When applied to a gas meter, the first and second passages of the single power source gas control valve are connected to the gas meter case gas flow inlet and gas meter case gas flow outlet, respectively, of the gas meter, so that the single power source gas control valve allows gas to enter and exit the gas meter when both the first and second passages are opened by the power source 160 of the single power source gas control valve. When the power source 160 of the single power source gas control valve has closed both the first and second passages, the single power source gas control valve closes the flow of gas through the gas meter.

Because the single-power-source gas control valve provided by the disclosure has a single-power-source and double-channel structure, and the two channels are synchronously opened and closed under the driving of the power source 160, the opening and closing simultaneity of the two channels can be ensured, and because any one of the two channels is closed, the air flow is cut off, and the air flow is cut off and closed more safely and redundantly. When the single-power-source gas control valve is applied to a gas meter, the possibility of gas leakage caused by the problem that the valve is not closed effectively is greatly reduced, and therefore the safety of the gas meter is improved.

It should be noted that the single power source gas control valve proposed in the present disclosure is not limited to be used in a gas meter.

The present disclosure also provides a gas meter, which includes a gas meter housing, a gas meter movement for measuring the flow of gas, and a single power source gas control valve according to various embodiments of the present disclosure. The gas meter core and the single power source gas control valve are contained in the gas meter shell. The gas meter shell can comprise 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 the first channel of the single-power-source gas control valve, and the gas meter shell gas flow outlet is communicated with the second channel of the single-power-source gas control valve, so that gas can enter the movement of the gas meter through the gas meter shell gas flow inlet and the first channel of the single-power-source gas control valve and leave the gas meter from the movement through the second channel of the single-power-source gas control valve and the gas meter shell gas flow outlet. The opening and closing of the gas may be achieved by the opening and closing operation of the two passages of the single power source gas control valve. As described above, the gas meter having the single power source gas control valve has higher safety.

The specific structure of the single power source gas control valve will be described in detail with reference to the accompanying drawings. Fig. 1 illustrates a perspective view of a single power source gas control valve, according to an embodiment of the present disclosure. Fig. 2A and 2B illustrate a top view and a partially exploded perspective view, respectively, of the single power source gas control valve of fig. 1, both primarily illustrating the top half, and fig. 3A and 3B illustrate a bottom view and a partially exploded perspective view, respectively, of the single power source gas control valve of fig. 1, both primarily illustrating the bottom half. Fig. 4A and 4B show exploded views of the switch member at different angles, respectively, and fig. 5A, 5B, 5C, 5D show specific structures of the transmission sleeve, the transmission screw, the threaded sleeve, and the slider, respectively. Fig. 6 illustrates an interior view of the single power source gas control valve with the first half housing removed and fig. 7 illustrates an overall exploded view of the single power source gas control valve.

Referring to the drawings, a single power source gas control valve includes a housing 100 having two passages formed through the housing 100 for gas flow therethrough: a first channel 110 and a second channel 120, wherein the first channel 110 and the second channel 120 are arranged parallel to each other.

Preferably, the housing 100 comprises a first half-housing 101 and a second half-housing 102, which are butted against each other to form a receiving chamber of the entire housing. A seal may be provided between the first and second housing halves to effect sealing of the interior chamber. The first channel 110 and the second channel 120 each pass through both the first half shell 101 and the second half shell 102.

Preferably, the first and second passages 110 and 120 are located at both longitudinal ends of the housing 100, respectively. The power source is disposed at the central portion of the housing, and the two sets of passage opening and closing actuators are also located at the central portion of the housing and are distributed on both sides of the power source, so that the single-power-source gas control valve as a whole exhibits a symmetrical arrangement, as shown in fig. 6.

The power source 160 is accommodated in the accommodation chamber of the housing 100. The power source is configured to drive the two sets of passage opening and closing actuators, and may be any type of device, structure, assembly, etc. capable of providing power to the two sets of passage opening and closing actuators. Preferably, the power source 160 is an electric motor.

Two sets of passage opening and closing actuators are also accommodated in the accommodating chamber of the housing 100, both of which are directly or indirectly connected to the power source 160, referred to as a first passage opening and closing actuator configured to open and close the first passage 110 by the power source 160 and a second passage opening and closing actuator configured to open and close the second passage 120 by the power source 160, respectively. In particular, the driving mechanism of each channel opening and closing actuator of the present disclosure is driven by the power source 160 to synchronously open and close the corresponding channel.

Preferably, the two sets of channel opening and closing actuators have the same structure, and the two sets of channel opening and closing actuators can be arranged symmetrically or in mirror image. Alternatively, the two sets of passage opening and closing actuators may have different structures or details.

Wherein, each set of channel opening and closing actuating mechanism comprises a driving mechanism and a switch component. The driving mechanism is directly or indirectly connected to the power source 160, which is operated by the power source. The switch member is configured to move under the urging of the respective drive mechanism between an open position in which it does not block airflow through the respective passage and a closed position in which it blocks airflow through the respective passage.

The end actuating part of the actuating mechanism is connected with the switch component, so that the actuating mechanism of the channel opening and closing actuating mechanism can drive the corresponding switch component to move under the driving of the power source 160, and the opening and closing of the corresponding channel are realized.

In which figures 4A and 4B show, respectively, in different views, an exploded view of a switch element comprising, in the preferred embodiment shown in the figures, a base 121 which may be provided with a connection to the drive mechanism of the passage opening and closing actuator so as to receive the drive of said drive mechanism, and a closure plate 122 supported by said base. The closure plates are configured to close the respective channels and are preferably plate-like structures.

Wherein the end effector of the drive mechanism is embodied in the illustrated preferred embodiment as a slider 163, said slider 163 being provided on its side with a connecting portion 1633 for connection to the switch member, as shown in fig. 5D, and correspondingly the side of the base 121 of the switch member being provided with two protrusions to engage the connecting portion 1633 on the side of the slider 163, as shown in fig. 4A.

In order to better judge whether hidden danger exists in the operation of the single power source gas control valve and/or the gas meter provided with the single power source gas control valve, the single power source gas control valve is provided with a sensor design at a specific position.

The single power source gas control valve includes a first sensor 140, the first sensor 140 being mounted to sense one or more gas parameters of the gas at the first passage 110. Preferably, as shown in fig. 2B, the first sensor 140 is mounted in a first passage interface 113, the first passage interface 113 being a structure that engages with the housing 100 to form a portion of a first passage, the first passage interface 113 being for engaging with a corresponding gas passage of a gas meter when the single power source gas control valve is installed in the gas meter. The first channel interface members 113 may be joined to the respective first housing halves by fasteners such as screws. Preferably, the first passage interface 113 has a mounting groove formed in an outer surface thereof facing away from the first housing half for mounting the first sensor 140, and a sensing portion of the first sensor 140 communicates with the first passage 110 through a communication hole in the first passage interface 113.

Preferably, the first sensor is a temperature and pressure sensor, and the measured gas parameters comprise the temperature and pressure of the gas. Alternatively, the first sensor may be a temperature sensor that measures only temperature or a pressure sensor that measures only pressure.

The arrangement of the first sensor can improve the safety of the gas meter provided with the single power source gas control valve. For example, if the single power source gas control valve is in a closed state and the first sensor loses pressure, it may be assumed that someone has illegally detached the gas meter or another leak in front of the meter.

Still referring to fig. 2B, the single power source gas control valve may further include a first cover plate 141 for securing the first sensor. The first sensor 140 is located between the first cover plate 141 and the first channel interface 113.

Preferably, the single power source gas control valve further comprises a second sensor 150, said second sensor 150 being mounted to said housing 100 adjacent said second passage 120. When the single power source gas control valve is mounted to the gas meter, the second sensor is located at the bottom of the housing 100 of the single power source gas control valve, i.e., at the side of the housing 100 facing the movement of the gas meter.

The second sensor can cooperate with the first sensor for monitoring and detecting safety problems, for example, when the first sensor and the second sensor generate a pressure difference within a certain threshold range, it indicates that a gas pipeline or a gas-using device behind the gas meter has gas leakage. In addition, whether the gas meter is installed reversely can be detected by using the method: if the gas-using device is opened after the meter, the first sensor and the second sensor have negative difference within the threshold range, and the gas meter is probably reversely installed.

Preferably, the single power source gas control valve includes a second cover 151 for mounting the second sensor 150, and when mounted, the second sensor 150 is positioned between the second cover 151 and the housing 100.

Preferred embodiments of the drive mechanism of the present disclosure are described below. The drive mechanism first includes a drive screw 162, with FIG. 5B showing a preferred embodiment of the drive screw. The lead screw 162 is preferably configured to translate (directly or indirectly) under the power source 160.

The slide 163, as an end effector of the drive mechanism, is coupled to both the drive screw 162 and the switch member so as to transmit the translational movement of the drive screw 162 to the corresponding switch member, which moves the corresponding switch member.

Preferably, a connecting portion 1633 for connecting to the switching member is provided on a side portion of the slider 163. The connecting portion 1633 may be a protrusion, such as a generally block-shaped protrusion, on the side of the slider 163. Correspondingly, the switch member, and in particular the base of the switch member, may be provided with structure for engaging with the connecting portion 1633 of the slider 163 such that translational movement of the slider causes translational movement of the switch member.

The slider 163 is preferably provided with a transfer hole 1631 aligned with the axial direction of the drive screw 162 and a slit 1632 perpendicular to the transfer hole 1631, and the locking piece 164 may be disposed in the slit 1632. The driving end of the driving screw 162 is engaged with both the locking piece 164 and the slider 163 through the transmission hole 1631 of the slider 163, wherein the locking piece 164 holds and reinforces the fixation of the driving screw 162 with the slider 163 in the axial direction.

Preferably, the drive mechanism further comprises a bellows 170 that is collapsible in length, wherein fig. 5C shows a preferred configuration of the bellows 170. The bellows 170 is disposed about the drive screw 162 such that the drive screw 162 is located within the bellows. Wherein one end of the bellows is fixed with respect to the housing 100 and the other end is connected to the end of the drive screw 162 near the slide 163. As the leadscrew 162 translates back and forth along its axis, the bellows 170 can expand and contract.

Preferably, the driving mechanism further comprises a transmission sleeve 161 driven by the power source to perform a rotational motion, wherein the transmission screw 162 is at least partially disposed in the transmission sleeve 161, and an engagement structure is disposed inside the transmission sleeve and configured to engage with the transmission screw, so that the rotational motion of the transmission sleeve drives the transmission screw 162 to perform a translational motion.

Alternatively, a speed reduction mechanism may be provided between the power source and the transmission sleeve such that rotation from the power source is reduced and transmitted to the transmission sleeve.

Optionally, a clutch mechanism may also be provided between the power source and the transmission sleeve to allow selective connection and disconnection of the power source and the transmission sleeve.

When the power source of the single power source gas control valve is started, the single power source gas control valve drives the driving mechanisms of the two sets of channel opening and closing actuating mechanisms simultaneously. Specifically, when power source 160 is activated, it directly or indirectly (e.g., via a speed reduction and/or clutch mechanism) rotates transmission sleeve 161. Due to the rotation of the transmission sleeve 161, the transmission screw 162 engaged inside the transmission sleeve 161 generates a translational movement in the direction of its own axis. The slide 163 also performs a translational movement under the drive of the drive screw. In the process, the threaded sleeve will contract or extend accordingly, depending on the direction of translation of the drive spindle. Since the slider 163 is engaged with the base of the switching member, the sliding member carries the switching member in a translational movement, so that the switching member is moved and switched between an open position, in which it does not block the air flow through the respective channel, and a closed position, in which it blocks the air flow through the respective channel.

The scheme also carries out corresponding arrangement on the shell so as to more compactly and scientifically accommodate two sets of channel opening and closing actuating mechanisms. Specifically, referring to fig. 2A, the first housing half 101 preferably includes a central raised portion 1011 and two lateral raised portions 1012 located on either side of the central raised portion. The central rising portion 1011 is provided to define a space for accommodating the power source 160, and the two side rising portions 1012 are provided to define spaces for accommodating two sets of passage opening and closing actuators, respectively. Referring to fig. 3A, the second housing half is of substantially planar construction. Such a housing structure is particularly suitable for compact and symmetrical accommodation of the passage opening/closing actuator having the above structure even when the housing structure is easily attached to a gas meter.

Exemplary embodiments of the proposed solution of the present disclosure have been described in detail above with reference to preferred embodiments, however, it will be understood by those skilled in the art that many variations and modifications may be made to the specific embodiments described above, and that many combinations of the various technical features and structures presented in the present disclosure may be made without departing from the concept of the present disclosure, without departing from the scope of the present disclosure, which is defined by the appended claims.

Claims (17)

1. A single power source gas control valve, comprising:

a housing (100) through which two passages for an air flow to pass are formed, including a first passage (110) and a second passage (120), wherein the first passage (110) and the second passage (120) are arranged in parallel with each other;

a power source (160) housed within the housing (100);

two sets of passage opening and closing actuators, both of which are directly or indirectly connected to the power source (160), wherein a first passage opening and closing actuator of the two sets of passage opening and closing actuators is configured to open and close the first passage (110) under the drive of the power source (160), and a second passage opening and closing actuator of the two sets of passage opening and closing actuators is configured to open and close the second passage (120) under the drive of the power source (160),

wherein, every set of passageway switching actuating mechanism includes:

a drive mechanism directly or indirectly connected to the power source (160);

a switch member configured to move between an open position not to block airflow through the respective channels and a closed position to block airflow through the respective channels under the urging of the respective drive mechanisms;

wherein, the driving mechanism of each set of channel opening and closing actuating mechanism synchronously opens and closes the corresponding channel under the driving of the power source (160).

2. The single power source gas control valve of claim 1,

the single power source gas control valve includes a first sensor (140), the first sensor (140) being mounted to sense one or more gas parameters of the gas at the first passage (110).

3. The single power source gas control valve of claim 2,

the single power source gas control valve including a first passage interface (113) engaged with the housing (100), the first passage (110) passing through the housing (100) and the first passage interface (113),

the first sensor (140) is disposed in the first channel interface (113).

4. The single power source gas control valve of claim 3,

in an outer surface of the first passage interface (113) facing away from the housing (100), there is a mounting groove in which the first sensor (140) is disposed, and a sensing portion of the first sensor (140) communicates with the first passage (110) through a communication hole in the first passage interface (113).

5. The single power source gas control valve of claim 3,

the single-power-source gas control valve further includes a first flap (141), the first sensor (140) being located between the first flap (141) and the first passage interface (113).

6. The single power source gas control valve of claim 2,

the first sensor (140) is a temperature and pressure sensor to measure the temperature and pressure of the gas passing through the first passage (110).

7. The single power source gas control valve of claim 2,

the single power source gas control valve further includes a second sensor (150), the second sensor (150) mounted to the housing (100) proximate the second passage (120).

8. The single power source gas control valve of claim 7,

the single power source gas control valve further includes a second cover sheet (151), the second sensor (150) being mounted between the second cover sheet (151) and the housing (100).

9. The single power source gas control valve of claim 1, wherein the drive mechanism comprises:

a drive screw (162) configured to move in translation under the power of the power source (160);

a slider (163) coupled to the drive screw (162) and the switch member so as to transfer the translational movement of the drive screw (162) to the switch member.

10. The single power source gas control valve of claim 9,

a connecting portion (1633) for connecting to a switch member is provided on a side portion of the slider (163).

11. The single power source gas control valve of claim 9,

the slider (163) is provided with a transfer hole (1631) coinciding with an axial direction of the drive screw (162) and a slit (1632) perpendicular to the transfer hole (1631),

the locking piece (164) is arranged in the gap (1632), wherein the drive end of the drive screw (162) is fitted through the transfer hole (1631) of the slider (163) with both the locking piece (164) and the slider (163) such that the drive screw (162) is fixed with the slider (163) in the axial direction.

12. The single power source gas control valve of claim 9,

the driving mechanism comprises a length-adjustable bellows (170), the bellows (170) is arranged around the transmission lead screw (162), one end of the bellows is fixed relative to the shell (100), and the other end of the bellows is connected to the end of the transmission lead screw (162) close to the sliding piece (163).

13. The single power source gas control valve of claim 9, wherein the drive mechanism comprises:

the transmission sleeve (161) is configured to rotate under the driving of the power source, wherein the transmission lead screw (162) is at least partially arranged in the transmission sleeve (161), and an engagement structure with the transmission lead screw is arranged in the transmission sleeve, so that the transmission lead screw (162) is driven to move in a translation manner by the rotation of the transmission sleeve.

14. The single power source gas control valve of claim 1,

the housing (100) comprises a first half housing (101) and a second half housing (102), the first half housing (101) and the second half housing (102) form a containing chamber for containing a power source (160), a first passage opening and closing actuator and a second passage opening and closing actuator,

the first channel (110) and the second channel (120) each pass through both the first half-shell (101) and the second half-shell (102).

15. The single power source gas control valve of claim 14,

the first half shell (101) comprises a central bulge part (1011) and two side bulge parts (1012) positioned on two sides of the central bulge part, wherein the central bulge part (1011) defines a space for accommodating the power source (160), and the two side bulge parts (1012) respectively define spaces for accommodating two sets of channel opening and closing actuators.

16. The single power source gas control valve of claim 1,

the switch member includes a base (121) and a closure plate (122) supported by the base, the closure plate being configured to close the respective channels.

17. A gas meter, characterized by comprising a gas meter case, a gas meter movement for measuring the flow rate of gas and a single power source gas control valve according to any one of claims 1 to 16,

the gas meter core and the single power source 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 (110) of the single power source gas control valve, and the gas meter shell gas flow outlet is communicated with a second channel (120) of the single power source 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 (110) of the single power source gas control valve and leave the gas meter from the core through the second channel (120) of the single power source gas control valve and the gas meter shell gas flow outlet.

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