KR101020166B1 - Gasmeter - Google Patents

Abstract

The present invention relates to a gas meter, and more particularly to a gas meter capable of measuring the gas flow rate in both directions.

The gas meter according to the present invention comprises: an upper housing having a first passage and a second passage for connecting to an external gas supply pipe, and a lower housing coupled to the upper housing, wherein the upper housing The first branch pipe connected to the first passage toward the lower housing and the second branch pipe formed to communicate with the cavity inside, and the third branch connected to the second passage toward the lower housing A fourth branch pipe is formed to communicate with the branch pipe and the cavity inside, and the gas flowing into the first passage is discharged through the second branch pipe, and the gas flowing into the second passage passes through the third branch pipe. A flow control means for introducing gas through the second branch pipe and allowing the gas flowing into the second passage to be discharged through the fourth branch pipe. Characterized in that provided.

Passage, housing, branch pipe, cavity, flow control means

Description

Gas Meter {GASMETER}

The present invention relates to a gas meter, and more particularly to a gas meter capable of measuring the gas flow rate in both directions.

The gas meter is a device that accumulates the flow rate of the gas supplied to the gas pipe to be supplied to the consumer. Diaphragm gas meters are frequently used for metering gas.

The diaphragm type gas meter includes a lower housing having a metering chamber in which a pair of diaphragms are installed, and an upper housing installed at an upper portion of the lower housing and connected to a gas pipe. In addition, inside the upper and lower housings, a crank connected to the diaphragm and a display unit for accumulating and displaying a gas flow rate supplied to the crank are provided. In addition, the inside of the housing is provided with a distribution plate and a distribution rotating cap connected to the crank for distributing gas to the front and rear diaphragms.

Conventional diaphragm gas meters are of two types depending on the connection state of the gas pipe. A gas supply pipe is connected to a passage located on the right side of the upper housing while the display unit is disposed on the front side, so that the supplied gas is metered and discharged to the passage located on the left side, called a right type gas meter. The gas supply pipe is connected to the passage so that the supplied gas is metered and discharged into the passage located on the right side. Gas supply pipes installed in apartments such as apartments are installed differently depending on the location of the consumer. Therefore, the gas meters of the left and right types are manufactured and used without changing pipes, which are expensive.

In order to manufacture the gas meter of the left / right type, each mold is required and there is a problem that the manufacturing cost is high because the number of parts increases. In addition, the cost of manufacturing and managing parts separately required for the left / right type is expensive, and inventory cost for maintenance is also increased because the left / right type must be provided respectively.

In addition, there is a case of incorrect installation by changing the left / right type in the field, and additionally incurs the cost of correcting the wrong installation. In order to prevent the left / right type from being installed incorrectly, a separate indication for the left / right type must be marked on the appearance of the gas meter. In general, a sticker is attached by the direction indication method, and a cost is incurred by the sticker attached.

The present invention is to solve the various problems caused by manufacturing and using differently according to the conventional left / right type, can be used in common without distinguishing the left / right type can innovatively reduce the manufacturing cost, efficient The aim is to provide a gas meter that can be managed and operated.

The gas meter according to the present invention comprises: an upper housing having a first passage and a second passage for connecting to an external gas supply pipe, and a lower housing coupled to the upper housing, wherein the upper housing The first branch pipe connected to the first passage toward the lower housing and the second branch pipe formed to communicate with the cavity inside, and the third branch connected to the second passage toward the lower housing A fourth branch pipe is formed to communicate with the branch pipe and the cavity inside, and the gas flowing into the first passage is discharged through the second branch pipe, and the gas flowing into the second passage passes through the third branch pipe. A flow control means for introducing gas through the second branch pipe and allowing the gas flowing into the second passage to be discharged through the fourth branch pipe. Equipped.

The gas meter according to the present invention has a plurality of branch pipes formed in the upper housing and has means for controlling the flow of the gas supplied from the outside to the branch pipes, so that the flow rate of the gas is independent of the direction of the gas supplied from the outside. Can be measured.

As the flow control means, a check valve installed in each of the first branch pipe, the second branch pipe, the third branch pipe, and the fourth branch pipe may be used. The check valves installed in the second and fourth branch pipes are opened and closed only in one direction so that the gas introduced into the first and second passages respectively flows into the metering chamber of the lower housing, and installed in the first and third branch pipes. The check valve opens and closes in only one direction such that the check valve is discharged to the first and second passages through the gas discharge portion communicated with the metering chamber.

In addition, the lower housing of the gas meter according to the present invention is provided with a gaseous discharge portion to communicate with the first branch pipe and the third branch pipe. The gas outlet portion is formed in a groove shape so as to have a predetermined depth on an upper portion of the lower housing facing the upper housing, and is provided between the upper housing and the lower housing. In addition, a pair of discharge holes are provided between the upper housing and the lower housing and formed so as to communicate the first and third branch pipes of the gas outlet and the upper housing, and are installed between the discharge holes and communicate with the respective measuring chambers of the lower housing. And a distribution plate in which a plurality of partitioned gates are formed. In addition, the plurality of gates of the distribution plate includes a distribution rotation cap rotatably installed on top of the gate to sequentially open and close by rotation.

In addition, the check valve of the gas meter according to the present invention, the valve cover is formed with a through passage, the valve body is provided on the other end of the valve cover and the passage formed on the outer peripheral surface, and is installed between the valve cover and the valve body And a valve seat installed to open and close the through passage of the valve cover, and a spring installed to restrain the operation of the valve seat.

In addition, the check valve of the gas meter according to the present invention, the packing is further provided for airtightness between the valve cover and the valve body.

According to the present invention, since bi-directional measurement is possible, there is an effect of innovatively reducing the mold cost of the gas meter and the cost for manufacturing and managing the parts used in common.

In addition, since it is installed quickly in the gas supply pipe without distinguishing the left / right type, it is possible to prevent the wrong installation in the field, thereby improving the work efficiency.

In addition, it is not necessary to attach a sticker to indicate the direction in which gas flows as in the prior art. Therefore, it is possible to reduce the cost of the non-sticker, thereby reducing the work process has the effect of improving productivity.

 In addition, when the gas meter is transported or stored, there is no need to distinguish the left / right type, so management is easy.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

Figure 1 is a front view of one embodiment of a gas meter according to the present invention, Figure 2 is an exploded perspective view of the lower housing of the gas meter shown in Figure 1, Figure 3 is a distribution plate and the distribution rotation of the lower housing shown in Figure 2 Figure 4 is an exploded perspective view of the cap, Figure 4 is a plan view of the lower housing is installed flow control means shown in Figure 2, Figure 5 is a cross-sectional view of the upper housing of the gas meter shown in FIG.

The gas meter 100 according to the present invention includes a lower housing 110, an upper housing 120, a crank 130, a distribution rotating cap 140, and a display unit 150.

The lower housing 110 has a gas outlet portion 115 having a predetermined depth at an upper portion facing the upper housing 120, and each of the first to fourth holes H1 is formed at both sides of the gas outlet portion 115. H4) is partitioned. The first to fourth holes H1 to H4 communicate with a pair of metering chambers 111 partitioned by partition walls. That is, the first and second holes H1 and H2 of the first to fourth holes H1 to H4 communicate with the metering chamber 111 formed on the front surface of the pair of metering chambers, and the remaining third and fourth holes are communicated with each other. Halls H3 and H4 communicate with a metering chamber (not shown) formed on the rear surface.

The pair of metering chambers 111 are each provided with a diaphragm 113. The diaphragm 113 serves to introduce and discharge gas while repeating expansion and contraction along the front and the rear of the measurement chamber 111 sealed by the cover 114. Referring to the first hole and the second hole (H1, H2) of the first to fourth holes (H1 ~ H4) sequentially operating as an example, when the gas flows through the first hole (H1) the lower housing 110 The diaphragm 113 installed in the metering chamber 111 of the expands forward with the cover 114. When the gas flows through the second hole H2, the diaphragm 113 expanded forward expands the gas introduced through the first hole H1 into the first hole while expanding to the rear with the partition wall by the incoming gas. Eject via (H1).

Therefore, in the diaphragm 113 provided in each measuring chamber 111, each diaphragm 113 expands back and forth in the measuring chamber 111 by the gas which flows into the 1st-4th hole H1-H4 sequentially. And discharge the gas introduced by contraction. At this time, the amount of gas used is calculated by integrating the discharged gas.

The diaphragm 113 is connected to the reciprocating link 112 installed at one end of the lower housing 110. And the other end of the reciprocating link 112 is fixed to the inside of the shaft 131 partially exposed to the outside of one end of the metering chamber 111, and transmits the kinetic force received from the diaphragm 113 to the shaft 131.

In addition, the upper portion of the lower housing 110, the distribution plate 116 is installed. In the distribution plate 116, the first and second discharge holes 116a and 116b are formed at positions corresponding to the first and second grooves 115a and 115b of the gas discharge unit 115, respectively. In addition, the distribution plate 116 is provided with a plurality of distribution sockets 117 partitioned in the center so as to guide the gas flowing into the first to fourth holes H1 to H4. In addition, the distribution socket 117 is formed with first to fourth gates G1 to G4 so as to be sequentially introduced through the first to fourth holes H1 to H4, and the introduced gas that has passed through the metering chamber 111. The fifth gate G5 is formed at the center to guide the gas to the gas discharge unit 115.

In the present invention, the distribution plate 116 and the distribution socket 117 are separately molded and assembled, but the distribution socket 117 may be integrally molded to the distribution plate 116.

The upper portion of the distribution plate 116 has a distribution rotation cap 140 is installed. The distribution rotation cap 140 may include the first to fourth gates G1 to G4 of the distribution socket 117 to sequentially open and close the first to fourth gates G1 to G4 of the distribution plate 116 by rotation. It is rotatably installed at the top of the. In this way, the distribution rotary cap 140 installed for split supply may include openings 142 having a portion removed to guide the gas introduced into the metering chamber 111, and the gas discharged through the metering chamber 111. The accommodation chamber 141 is formed to guide the second grooves 115a and 115b.

In addition, the crank 130 is provided to restrain the rotation of the distribution rotary cap 140. The crank 130 is for converting the rotational movement of the reciprocating motion of the diaphragm 113, one end is installed at the end of the link 132 and the link 132 connected to each axis 131, the volume of the gas flow rate A plurality of gears 134 for calculating the. In addition, it is provided with a support bracket 133 fastened to one end of the lower housing 110 to protect the distribution rotary cap 140 and support the crank 130.

The upper housing 120 is provided in close contact with the upper housing of the lower housing 110 to maintain airtightness. In addition, first and second passages 121 and 124 are formed at one end to be connected to an external gas supply pipe. The first passage 121 is formed of the first branch pipe 122 formed to face the lower housing 110 and the second branch pipe 123 communicating with the cavity 127 therein. In addition, the second passage 124 includes a third branch pipe 125 formed to face the lower housing 110, and a fourth branch pipe 126 communicating with the cavity 127 therein. The second branch pipe 123 and the fourth branch pipe 126 of the first to fourth branch pipes 122, 123, 125, and 126 formed in this way are predetermined in the upper housing 120 so as to communicate with the metering chamber 111 of the lower housing 110. The cavity 127 is formed in position. The first to fourth branch pipes 122, 123, 125, and 126 are provided with flow control means for controlling the flow direction of the gas flowing through the first and second passages 121, 124.

The flow control means according to the embodiment of the present invention is a check valve, and the first to fourth check valves CV1 to CV4 are installed at positions corresponding to the first to fourth branch pipes 122, 123, 125, and 126, respectively.

In general, the check valve is intended to restrict the flow of gas to pass in only one direction, also referred to as a non-return valve. Accordingly, the first to fourth check valves CV1 to CV4 include a valve cover 11, a valve body 12, a valve seat 13, a spring 14, and a packing 15. That is, a valve cover 11 having a passage through which a gas is introduced therethrough and a valve body 12 having at least one passage formed along an outer circumferential surface thereof are detachably fastened to the other end of the valve cover 11. . In addition, the valve seat 13 and the other end of the valve seat 13, which is installed inside the valve cover 11 and the valve body 12, one end is provided for opening and closing the passage through the valve cover 11 and It includes a spring 14 having a restoring force provided between the valve body 12. In addition, a packing 15 may be further installed between the valve cover 11 and the valve body 12 to improve airtightness.

Referring to the operation principle of the check valve, when the gas flows through the passage through the valve cover 11, one end of the valve seat 13 closing the passage of the valve cover 11 is introduced into the gas pressure The spring 14 is pushed while pressing. Then, while the passage of the valve cover 11 and the valve seat 13 which are closed open, the passage opens and gas passes. If the incoming gas supply is blocked, one end of the valve seat 13 closes the passage through which the valve cover 11 is opened while the compressed spring 14 having elasticity is restored. On the contrary, when gas is introduced through the valve body 12, the gas may not pass because one end of the valve seat 13 is in close contact with the passage through the valve cover 11 due to the pressure of the introduced fluid.

Although the check valve of one embodiment has been described in the present invention, any configuration may be used as long as it can pass the gas flowing in only one direction.

The crank 130 operates while the distribution rotation cap 140 rotates by the gas introduced through the first and second passages 121 and 124 of the upper housing 120, and at the same time, the plurality of cranks 130 are installed at the ends of the crank 130. Gear 134 is rotated. The gas flow rate used for the display unit 150 engaged with the plurality of gears 134 is accumulated and displayed. The display unit 150 is installed on the front surface of the upper housing 120.

FIG. 6 is a cross-sectional view illustrating a gas flow when the gas flows through the first passage of the upper housing illustrated in FIG. 5, and FIG. 7 illustrates a gas flow through the second passage of the upper housing illustrated in FIG. 5. Sectional drawing showing the gas flow.

Gas meter 100 according to the present invention, when the gas flows through the first passage 121 of the upper housing 120 of the first embodiment, the first and second branch pipes communicated with the first passage 121 Gas flowed into (122,123). At this time, the first branch pipe 122 is not introduced into the lower housing 110 by the second check valve CV2 installed to block the gas flowing into the metering chamber 111. On the other hand, the second branch pipe 123 is introduced into the lower housing 110 through the cavity 127 by the first check valve CV1 installed to flow into the metering chamber 111. The gas introduced as described above passes through the cavity 127 and flows into the upper portion of the lower housing 110.

The introduced gas passes through the opening 142 of the distribution rotation cap 140 and flows into the distribution socket 117 installed at the lower portion of the distribution rotation cap 140. At this time, the first to fourth gates G1 to G4 of the distribution socket 117 are sequentially supplied by rotation. The gas flowing into the first to fourth gates G1 to G4 sequentially passes through the distribution plate 116 and then sequentially to the first to fourth holes H1 to H4 installed at one end of the lower housing 110. Flows into. As introduced above, the introduced gas contracts or expands the diaphragm 113 in communication with each of the metering chambers 111. In addition, the gas passing through each of the metering chambers 111 is discharged through the first to fourth holes H1 to H4 introduced thereto and is introduced into the accommodation chamber 141 of the distribution rotation cap 140. The introduced gas flows in the direction of the fifth gate G5 penetrating through the center of the distribution socket 117 through the accommodation chamber 141.

In addition, the introduced gas flows into the gas discharge portion 115 formed at the upper portion of the lower housing 110, and at the same time, leads to both ends of the gas discharge portion 115, that is, the first and second grooves 115a and 115b. do. The gas thus introduced passes through the first and second discharge holes 116a and 116b of the distribution plate 116 in communication with the first and second grooves 115a and 115b, respectively, so that the first and second housings 120 and 120 may be first and second. The second and fourth check valves CV2 and CV4 installed in the third branch pipes 122 and 125 are pressurized. However, since the second check valve CV2 communicating with the first groove 115a is smaller than the gas pressure flowing into one end of the first passage 121, the valve seat 13 is closed without being pushed. On the other hand, in the fourth check valve CV4 communicating with the second groove 115b, the valve seat 13 is pressurized by the pressure of the discharged gas, and the passage and the valve seat 13 of the closed valve cover 11 are closed. The gas is discharged toward one end of the second passage 124 as it opens. At this time, the discharged gas pressurizes the valve seat 13 of the third check valve CV3 installed in the fourth branch pipe 126 communicating with the second passage 124. However, since the pressure passes through one end of the first passage 121 and is lower than the pressure of the gas introduced into the first check valve CV1, the closed state is maintained. Therefore, it is possible to discharge only to the second passage 124, that is, the supply pipe of the gas.

As shown in FIG. 7, the gas introduced into the second passage 124 on the right side of the pair of passages of the upper housing 120 receives gas introduced into the metering chamber 111 into the third branch pipe 125. It may not flow into the lower housing 110 by the fourth check valve CV4 installed to cut off. On the other hand, the fourth branch pipe 123 is introduced into the lower housing 110 through the cavity 127 through the third check valve CV3 installed to flow into the metering chamber 111.

The gas introduced as described above passes through the cavity 127 of the upper housing 120 to one end of the lower housing 110, and the flow of the gas introduced into the lower housing 110 before being discharged is illustrated in FIG. 6. Since it is the same as the illustrated first embodiment, a detailed description thereof will be omitted.

 Next, the gas introduced into each of the metering chambers 111 and discharged again is guided toward the first and second grooves 115a and 115b which are both ends of the gas outlet portion 115 formed at one end of the lower housing 110. The induced gas pressurizes the second and fourth check valves CV2 and CV4 installed in the first and third branch pipes 122 and 125 of the first and second passages 121 and 124 of the upper housing 120. However, since the fourth check valve CV4 communicating with the second groove 115b is smaller than the gas pressure flowing into one end of the second passage 124, the valve seat 13 is kept closed without being pushed. On the other hand, in the second check valve CV2 communicating with the first groove 115a, the valve seat 13 is pressurized by the pressure of the discharged gas, and the passage and the valve seat 13 of the valve cover 11 which are closed are closed. As the gas is opened, gas is discharged toward one end of the first passage 121. At this time, the discharged gas pressurizes the valve seat 13 of the first check valve CV1 of the second branch pipe 123 communicating with the first passage 121. However, since the pressure is lower than the pressure of the gas flowing through one end of the second passage 124 to the third check valve CV3, the closed state is maintained. Therefore, it is possible to discharge only to the first passage 121, that is, the supply pipe of the gas.

Gas meter 100 of the present invention, if the gas pipe flowing into any one of the first and second passages 121 and 124 of the upper housing 120 as described above, the gas flow rate through the other passage Accumulated gas is discharged. Therefore, the gas supply pipe installed in the apartment house, such as apartments can be used universally regardless of the left / right type when the gas flow direction is installed differently depending on the location of the customer.

Figure 8 (a) is a cross-sectional view showing a case where the gas flows through the first passage of the upper housing in which the flow control means of another embodiment according to the present invention, Figure 8 (b) is the gas flows through the second passage It is sectional drawing which shows the case.

In the upper housing 120 ′ of another embodiment according to the present invention, the fifth check valve CV5 is installed to restrict opening and closing of the first and second branch pipes 122 and 123, and the third and fourth branch pipes ( A sixth check valve CV6 is provided to restrict the opening and closing of the 125 and 126.

As shown in FIG. 8A, when gas is supplied to the first passage 121, the fifth check valve CV5 blocks the flow of the first branch pipe 122 and the second branch pipe 123. It is operated to pass through. At this time, the sixth check valve CV6 is operated so that the third branch pipe 125 is opened and the fourth branch pipe 126 is closed. On the contrary, when gas is supplied to the second passage 124 as shown in FIG. 8 (b), the sixth check valve CV6 blocks the flow of the third branch pipe 125 and goes to the fourth branch pipe 126. Manipulate to pass. At this time, the fifth check valve CV5 is operated so that the first branch pipe 122 is opened and the second branch pipe 123 is closed.

As described above, the fifth and sixth check valves CV5 and CV6 control the flow of the gas introduced and discharged like the first to fourth branch pipes 122, 123, 125, and 126 of the gas meter 100 of the first embodiment. It is for. Therefore, the operator can operate manually according to the left / right type or the control signal automatically from the outside of the gas meter 100. At this time, when the operator manually operates, it is preferable to install the locking device so that the fifth and sixth check valves CV5 and CV6 cannot be manipulated at random when the setting is completed.

The upper housing 120 ′ in which the fifth and sixth check valves CV5 and CV6 are installed has the same flow control as that of the upper housing 120 of the exemplary embodiment, but requires less check valves. As a result, manufacturing costs can be reduced.

Embodiments of the present invention described above and illustrated in the drawings should not be construed as limiting the technical spirit of the present invention. The protection scope of the present invention is limited only by the matters described in the claims, and those skilled in the art can change and change the technical idea of the present invention in various forms. Therefore, such improvements and modifications will fall within the protection scope of the present invention, as will be apparent to those skilled in the art.

1 is a front view of one embodiment of a gas meter in accordance with the present invention

FIG. 2 is an exploded perspective view of the lower housing of the gas meter shown in FIG. 1; FIG.

3 is an exploded perspective view of the distribution plate and the distribution rotary cap of the lower housing shown in FIG.

4 is a plan view of a lower housing in which the flow control means shown in FIG. 2 is installed;

5 is a cross-sectional view of the upper housing of the gas meter shown in FIG.

FIG. 6 is a cross-sectional view illustrating a gas flow when gas is introduced through a first passage of the upper housing illustrated in FIG. 5.

FIG. 7 is a cross-sectional view illustrating a gas flow when gas is introduced through a second passage of the upper housing illustrated in FIG. 5.

Figure 8 (a) is a cross-sectional view showing a case where the gas flows through the first passage of the upper housing in which the flow control means of another embodiment according to the present invention, Figure 8 (b) is the gas flows through the second passage Section showing the case

≪ Brief Description of Drawings &

100 gas meter 110 lower housing

111 Weighing Room 112 Round Trip Link

113 Diaphragm 114 Cover

115 Gasstower 116 Distribution Plate

117 Distribution socket 120 Upper housing

121 First passage 122 First branch pipe

123 Second Branch Pipe 124 Second Passage

125 Branch 3 Branch 126 Branch 4 Branch

127 cavity 130 crank

131 axis 132 link

133 Support Bracket 134 Gear

140 Dispense Rotating Cap 141 Storage Room

142 Opening 150 Display

CV1 to CV6 1st to 6th check valves G1 to G5 1st to 5th gates

H1 to H4 1st to 4th hole

Claims (6)

A gas meter comprising an upper housing having a first passage and a second passage to be connected to an external gas supply pipe, and a lower housing coupled to the upper housing. The upper housing has a first branch pipe connected to the first passage and directed to the lower housing, and a second branch pipe formed to communicate with the cavity inside, and connected to the second passage to face the lower housing. The fourth branch pipe is formed to communicate with the third branch pipe and the cavity inside, The gas flowing into the first passage is discharged through the second branch pipe, and the gas flowing into the second passage flows through the third branch pipe, and the gas flowing into the second passage flows through the fourth branch pipe. And a flow control means for discharging the gas flowing into the first passage through the first branch pipe. The method of claim 1, The gas meter of the lower housing, characterized in that the gas discharge portion is formed so as to communicate with the first branch pipe and the third branch pipe. The method of claim 2, The flow control means is a check valve installed in each of the first branch pipe, the second branch pipe, the third branch pipe, and the fourth branch pipe, The check valves installed in the second and fourth branch pipes are opened and closed so that gas introduced into the first and second passages respectively flows into the cavity of the upper housing. The check valves provided in the first and third branch pipes are installed so as to be opened and closed so that the gas in the gas discharge portion flows out into the first and second passages. The method of claim 3, The gas discharge portion is formed in a groove shape to have a predetermined depth on an upper portion of the lower housing facing the upper housing. A pair of discharge holes provided between the upper housing and the lower housing, the gas discharge unit and the first and third branch pipes of the upper housing communicate with each other; and each of the metering chambers of the lower housing; A distribution plate having a plurality of gates partitioned in communication with each other, And a distribution rotation cap rotatably installed on top of the gate to sequentially open and close the plurality of gates of the distribution plate by rotation. The method of claim 3, The check valve may include a valve cover having a through passage formed therein, a valve body installed at the other end of the valve cover and having a passage formed at an outer circumferential surface thereof, and installed between the valve cover and the valve body and penetrated by the valve cover. A gas meter comprising a valve seat installed to open and close a passage, and a spring installed to restrain the operation of the valve seat. The method of claim 5, Gas meter, characterized in that the packing is further installed to maintain the airtight between the valve cover and the valve body.

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