CN113639808A - Pressure taking valve and pressure taking system for wedge-type flowmeter - Google Patents
Pressure taking valve and pressure taking system for wedge-type flowmeter Download PDFInfo
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- CN113639808A CN113639808A CN202110804862.XA CN202110804862A CN113639808A CN 113639808 A CN113639808 A CN 113639808A CN 202110804862 A CN202110804862 A CN 202110804862A CN 113639808 A CN113639808 A CN 113639808A
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- 230000000712 assembly Effects 0.000 claims description 17
- 238000000429 assembly Methods 0.000 claims description 17
- 238000011010 flushing procedure Methods 0.000 claims description 17
- 238000010079 rubber tapping Methods 0.000 claims description 17
- 238000009530 blood pressure measurement Methods 0.000 description 61
- 238000003466 welding Methods 0.000 description 21
- 238000009434 installation Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 14
- 238000010438 heat treatment Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 238000007689 inspection Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
- G01F1/36—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
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Abstract
The invention discloses a pressure measuring valve and a pressure measuring system for a wedge-type flowmeter, wherein the pressure measuring valve for the wedge-type flowmeter comprises: the integrated valve body comprises an access head, an intermediate body fixedly connected with the access head and a flange fixedly connected with the intermediate body, wherein the access head, the intermediate body and the flange are of an integrated structure; the valve core assembly is arranged on the integrated valve body and used for controlling the on-off of the middle channel; one side of the access head, which is far away from the intermediate body, is used for being connected with the wedge-type flowmeter so that the access port is communicated with a pressure taking port of the wedge-type flowmeter, and the end face, which is far away from the intermediate body, of the flange is used for being connected with the transmitter.
Description
Technical Field
The invention relates to the technical field of pressure measuring tools of wedge flowmeters, in particular to a pressure measuring valve and a pressure measuring system for a wedge flowmeter.
Background
The wedge-type flowmeter is a novel throttling differential pressure type flow measuring instrument, can perform high-precision flow measurement under the conditions of high-viscosity and low Reynolds number fluid, and has incomparable advantages and irreplaceable effects on flow measurement occasions with low flow velocity, small flow and large pipe diameter. The fluid passes through the wedge type flowmeter, because of the throttling action of the wedge block in the wedge type flowmeter, a differential pressure which is in square relation with the flow value is generated on the upper and lower sides of the wedge block, the differential pressure is led out from the pressure taking ports on the two sides of the wedge block and is sent to a differential pressure transmitter to be converted into an electric signal to be output, and then the electric signal is calculated by a special intelligent flow integrating instrument, so that the flow value can be obtained.
The conventional wedge-type flowmeter pressure tapping and piping scheme widely used at present has at least the following defects:
1. the pressure valve group consists of a plurality of pipelines and flange valves, the required installation space is large, the flange valves and the pipelines are connected in a welding mode, and the number of welding seams is large.
2. The optimal pressure measurement mode of the wedge-type flowmeter is horizontal pressure measurement, because the measuring medium of the wedge-type flowmeter is generally liquid, bubbles can exist at the top of a pipeline, and measurement precision can be influenced by adopting top pressure measurement. In addition, if the valve is horizontally installed, a plurality of supporting pieces are required to be added for fixing after the valve is installed due to the heavy weight of the valve. It is for these mounting reasons that the use of wedge flowmeters is greatly limited.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a pressure taking valve for a wedge-type flowmeter.
The invention also provides a pressure taking system with the pressure taking valve for the wedge-type flowmeter.
According to an embodiment of the first aspect of the invention, a pressure relief valve for a wedge flowmeter comprises: the integrated valve body comprises an access head, an intermediate body fixedly connected with the access head and a flange fixedly connected with the intermediate body, wherein the access head, the intermediate body and the flange are of an integrated structure, the access head and the flange are respectively positioned on two adjacent sides of the intermediate body or on two opposite sides of the intermediate body, the access head is provided with an access port, the intermediate body is provided with an intermediate channel communicated with the access port, and the flange is provided with an outflow channel communicated with the intermediate channel; the valve core assembly is arranged on the integrated valve body and used for controlling the on-off of the middle channel; one side of the access head, which is far away from the intermediate body, is used for being connected with a wedge-type flowmeter, so that the access port is communicated with a pressure taking port of the wedge-type flowmeter, and the end face, which is far away from the intermediate body, of the flange is used for being connected with a transmitter.
The pressure taking valve for the wedge flowmeter provided by the embodiment of the invention at least has the following technical effects:
compared with the traditional valve group consisting of a plurality of pipelines and flange valves, the pressure taking valve for the wedge-type flowmeter has the advantages that the occupied space is smaller, a large amount of installation space can be reduced, in addition, a large amount of pipelines are not arranged, the installation material is saved, and a large amount of supporting and fixing parts, material cost, installation cost and the like are reduced; and, the integral type valve body in pressure-tapping valve for wedge flowmeter only needs two welding seams, compares in traditional valves, has reduced a large amount of welding expenses, welding seam inspection cost and a large amount of postweld heat treatment expenses (every welding seam still need carry out heat treatment after the welding in order to eliminate stress, the purpose is in order to reduce stress corrosion, improves life), has saved a large amount of installation time, welding seam inspection time, heat treatment time etc. simultaneously, has improved the construction progress.
According to some embodiments of the invention, the intermediate body is a rectangular parallelepiped structure, and a side surface of the intermediate body near the flange is arranged in parallel with an end surface of the flange near the intermediate body.
According to some embodiments of the invention, the flange is further provided with a flushing channel extending through the flange, the flushing channel is communicated with the outflow channel, and two ends of the flushing channel are closed or opened.
According to some embodiments of the invention, the number of the flanges is two, the two flanges are arranged in parallel and at intervals, and both the two flanges are located on one side of the middle body away from the access head;
the number of the middle passages is two, the two middle passages are communicated with the access port, one of the middle passages is communicated with the outflow passage of one of the flanges, and the other middle passage is communicated with the outflow passage of the other flange;
the valve core assemblies are of two types, wherein one type of the valve core assembly is used for controlling the on-off of one of the middle channels, and the other type of the valve core assembly is used for controlling the on-off of the other middle channel.
According to some embodiments of the invention, the access head is located in the center of the surface of the intermediate body.
According to some embodiments of the present invention, the number of the flanges is four, and each two of the flanges is a group, two of the flanges in one group of the flanges are arranged in parallel and spaced at one side of the middle body, two of the flanges in the other group of the flanges are arranged in parallel and spaced at the other side of the middle body, two groups of the flanges are symmetrically arranged with respect to the middle body, and the access head and any one of the flanges are respectively located on two adjacent sides of the middle body;
the four middle channels are communicated with the inlet, and are communicated with the outflow channels of the four flanges in a one-to-one correspondence manner;
the valve core assemblies are of four types, and the four types of valve core assemblies are used for controlling the on-off of the four middle channels in a one-to-one correspondence mode.
According to some embodiments of the invention, the access head is located in the center of the surface of the intermediate body.
According to a second aspect embodiment of the invention, the pressure tapping system comprises: a wedge-type flow meter having a pressure tap; and the pressure taking valve for the wedge flowmeter is characterized in that one side, far away from the intermediate body, of the access head is connected with the wedge flowmeter, so that the access port is communicated with the pressure taking port.
The pressure measuring system provided by the embodiment of the invention at least has the following technical effects:
compared with the traditional valve bank consisting of a plurality of pipelines and flange valves, the pressure taking system has the advantages that the occupied space is smaller, a large amount of installation space can be reduced, in addition, a large amount of pipelines are not arranged, the installation material is saved, and a large amount of supporting and fixing parts, material cost, installation cost and the like are reduced; and, the integral type valve body in pressure-tapping valve for wedge flowmeter only needs two welding seams, compares in traditional valves, has reduced a large amount of welding expenses, welding seam inspection cost and a large amount of postweld heat treatment expenses (every welding seam still need carry out heat treatment after the welding in order to eliminate stress, the purpose is in order to reduce stress corrosion, improves life), has saved a large amount of installation time, welding seam inspection time, heat treatment time etc. simultaneously, has improved the construction progress.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic front view of a pressure measurement valve for a wedge flowmeter according to a first embodiment of the present invention;
FIG. 2 is a schematic bottom view of the diagram of FIG. 1;
fig. 3 is a first schematic structural diagram of a pressure measurement valve for a wedge flowmeter according to a first embodiment of the present invention applied to a pressure measurement system;
fig. 4 is a schematic structural diagram of a second pressure measurement system to which the pressure measurement valve for the wedge flowmeter according to the first embodiment of the present invention is applied;
FIG. 5 is a schematic diagram of a front view of a pressure relief valve for a wedge flowmeter according to another embodiment of the invention;
fig. 6 is a schematic front view of a pressure measurement valve for a wedge flowmeter according to a second embodiment of the present invention;
FIG. 7 is a schematic bottom view of the diagram of FIG. 6;
fig. 8 is a schematic structural diagram of a pressure measurement system to which the pressure measurement valve for the wedge flowmeter according to the second embodiment of the present invention is applied;
fig. 9 is a schematic structural diagram of a second pressure measurement system to which the pressure measurement valve for the wedge flowmeter according to the second embodiment of the present invention is applied;
fig. 10 is a schematic front view of a pressure measurement valve for a wedge flowmeter according to a third embodiment of the present invention;
FIG. 11 is a schematic bottom view of the diagram shown in FIG. 10;
fig. 12 is a schematic structural diagram of a pressure measurement valve for a wedge flowmeter according to a third embodiment of the present invention, which is applied to a pressure measurement system.
The reference numbers illustrate:
10. a pressure-taking valve for the wedge-type flowmeter; 11. an integral valve body; 111. accessing a head; 1111. an access port; 112. an intermediate; 1121. a middle channel; 113. a flange; 1131. an outflow channel; 1132. flushing the channel; 12. a valve core assembly;
20. a wedge-type flowmeter.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
As shown in fig. 1 and 2, a pressure relief valve 10 for a wedge flowmeter according to an embodiment includes an integrated valve body 11 and a valve core assembly 12.
The integrated valve body 11 comprises an access head 111, a middle body 112 fixedly connected with the access head 111, and a flange 113 fixedly connected with the middle body 112, wherein the access head 111, the middle body 112, and the flange 113 are of an integrated structure, the access head 111 and the flange 113 are respectively located on two adjacent sides of the middle body 112 or on two opposite sides of the middle body 112, the access head 111 is provided with an access port 1111, the middle body 112 is provided with a middle channel 1121 communicated with the access port 1111, and the flange 113 is provided with an outflow channel 1131 communicated with the middle channel 1121.
Specifically, the connection head 111, the intermediate body 112, and the flange 113 are all an integral forged piece, and the connection head 111, the intermediate body 112, and the flange 113 are fixed into a whole by welding. Specifically, in the first embodiment, the access head 111 and the flange 113 are respectively located on two opposite sides of the middle body 112, and as seen from the perspective of fig. 1, the access head 111 is located above the middle body 112, and the flange 113 is located below the middle body 112. As shown in fig. 5, in other embodiments, the access head 111 and the flange 113 are respectively located at two adjacent sides of the middle body 112, and in the view of fig. 5, the access head 111 is located at the left side of the middle body 112, and the flange 113 is located below the middle body 112.
The valve core assembly 12 is disposed on the integrated valve body 11 and is used for controlling the opening and closing of the intermediate channel 1121.
Specifically, the valve core assembly 12 includes a valve rod and a valve core fixedly connected to the valve rod, and the valve core is provided with a through hole. The intermediate body 112 is provided with a fitting hole communicating with the intermediate passage 1121. The valve core is movably arranged in the middle channel 1121, one end of the valve rod extends into the assembly hole and is fixedly connected with the valve core, and the other end of the valve rod extends out of the assembly hole; the position of the valve core can be changed by rotating the valve rod, when the valve core is at the first position, the through hole of the valve core is parallel to the middle channel 1121, the middle channel 1121 is in a conducting state, and when the valve core is at the second position, the through hole of the valve core is perpendicular to the middle channel 1121, and the middle channel 1121 is blocked by the valve core.
More specifically, the valve core assembly 12 is a valve core assembly in a needle stop valve, and has small volume and high strength. The intermediate body 112 is provided with a fitting hole communicated with the intermediate passage 1121, and the valve core assembly 12 is arranged in the intermediate passage 1121 through the fitting hole, so that the intermediate passage 1121 can be controlled to be opened or closed by rotating the valve rod.
In another embodiment, the cartridge assembly 12 includes a valve stem and a cartridge fixedly connected to the valve stem. The intermediate body 112 is provided with a fitting hole communicating with the intermediate passage 1121. The valve core is movably arranged in the assembly hole, one end of the valve rod extends into the assembly hole and is fixedly connected with the valve core, and the other end of the valve rod extends out of the assembly hole; the position of the valve core can be changed by pushing and pulling the valve rod, when the valve core is located at the first position, the valve core is located in the assembly hole, the middle channel 1121 is in a conducting state, the valve rod is pushed, the valve core can be switched from the first position to the second position, when the valve core is located at the second position, the valve core is located in the middle channel 1121, and the middle channel 1121 is blocked by the valve core.
Compared with the traditional valve group consisting of a plurality of pipelines and flange valves, the pressure taking valve 10 for the wedge-type flowmeter has the advantages that the occupied space is smaller, a large amount of installation space can be reduced, in addition, a large amount of pipelines are not arranged, the installation material is saved, and a large amount of supporting and fixing parts, material cost, installation cost and the like are reduced; moreover, the integrated valve body 11 in the pressure tapping valve 10 for the wedge-type flowmeter only needs two welding lines, compared with a traditional valve group, a large amount of welding cost, welding line inspection cost and a large amount of post-welding heat treatment cost are reduced (each welding line needs to be subjected to heat treatment after being welded to eliminate stress, the purpose is to reduce stress corrosion and prolong the service life), a large amount of installation time, welding line inspection time, heat treatment time and the like are saved, and the construction progress is improved.
Further, the intermediate body 112 is a rectangular parallelepiped structure, and a side surface of the intermediate body 112 close to the flange 113 is parallel to an end surface of the flange 113 close to the intermediate body 112. In this way, the volume of the entire integrated valve body 11 can be reduced as much as possible.
Specifically, in the first embodiment, the distance from the side of the access head 111 far from the flange 113 to the side of the flange 113 far from the access head 111 is 180mm-250mm, and the height of the flange 113 is 215 mm.
Furthermore, a flushing channel 1132 is further arranged in the flange 113, the flushing channel 1132 extends through the flange 113, the flushing channel 1132 is communicated with the outflow channel 1131, and two ends of the flushing channel 1132 are closed or opened in an operable manner. In the use of pressure taking valve 10 for the wedge flowmeter, viscous medium flows into pressure taking valve 10 for the wedge flowmeter, and each channel in pressure taking valve 10 for the wedge flowmeter can be cleaned by flushing channel 1132.
Specifically, in this embodiment, only the flushing channel 1132 needs to be arranged in the flange 113, and in the conventional scheme, the flushing channel needs to be formed by a pipeline, a flange and a plurality of valves, so that the occupied space is large.
Specifically, wherein one end of the flushing channel 1132 is provided with a plug, and the other end is provided with a valve, and through opening or closing the plug, the opening and closing of one end of the flushing channel 1132 can be realized, and through opening or closing the valve, the plugging or opening of the other end of the flushing channel 1132 can be realized.
Fig. 3 is a schematic structural diagram of a pressure measurement system to which the pressure measurement valve 10 for a wedge flowmeter according to the first embodiment is applied; specifically, a pair of pressure measurement ports are opened at the top of the wedge flowmeter 20, and each pressure measurement port is provided with the pressure measurement valve 10 for a wedge flowmeter in the first embodiment. Referring to fig. 1 and 3, in each pressure measurement valve 10 for a wedge flowmeter, one side of the access head 111 away from the intermediate body 112 is connected to the wedge flowmeter 20, so that the access port 1111 communicates with a pressure measurement port, and the pressure measurement valve 10 for a wedge flowmeter is used for realizing top pressure measurement. Therefore, one transmitter is arranged at one pressure taking port.
Fig. 4 is a schematic structural diagram of a pressure measurement system to which the pressure measurement valve 10 for a wedge flowmeter according to the first embodiment is applied; specifically, a pair of pressure measurement ports are opened in the side portion of the wedge flowmeter 20, and each pressure measurement port is provided with the pressure measurement valve 10 for a wedge flowmeter in the first embodiment. Referring to fig. 1 and 4, in each pressure measurement valve 10 for a wedge flowmeter, the side of the inlet 111 away from the intermediate body 112 is connected to the wedge flowmeter 20, so that the inlet 1111 communicates with a pressure measurement port, and the pressure measurement valve 10 for a wedge flowmeter is used to achieve horizontal pressure measurement. Therefore, one transmitter is arranged at one pressure taking port.
In the pressure tapping system, as the volume of the whole pressure tapping valve 10 for the wedge-type flowmeter is greatly reduced compared with that of a valve group in the traditional scheme, when the pressure tapping valve 10 for the wedge-type flowmeter is installed at the top, the whole installation height is greatly reduced; when the pressure sampling valve 10 for the wedge flowmeter is horizontally installed, the whole installation thickness is greatly reduced.
As shown in fig. 1, it should be further noted that, in the pressure tapping valve 10 for a wedge flowmeter according to the first embodiment, there are two valve core assemblies 12, each valve core assembly 12 is assembled in the same manner as the intermediate body 112, the two valve core assemblies 12 cooperate to form a double-valve structure for jointly controlling opening and closing of the intermediate channel 1121, and the pressure tapping valve 10 for a wedge flowmeter is applied to a wedge flowmeter in which a medium pressure value in the wedge flowmeter is a high pressure. Among them, the petrochemical industry generally defines a pressure greater than or equal to ANSI900LB grade as high pressure, and a pressure less than ANSI900LB grade as medium and low pressure.
In other embodiments, the valve core assembly 12 in the pressure relief valve 10 for a wedge flowmeter is one, and a single valve core assembly 12 controls the opening and closing of the intermediate channel 1121, and the pressure relief valve 10 for a wedge flowmeter is applied to a wedge flowmeter in which a medium pressure value in the wedge flowmeter is a medium-low pressure.
Example two
As shown in fig. 6 and 7, the pressure measurement valve 10 for a wedge flowmeter according to the second embodiment has the same inventive concept as that of the first embodiment. Compared with the pressure taking valve 10 for the wedge flowmeter in the first embodiment, the pressure taking valve 10 for the wedge flowmeter in the second embodiment has two flanges 113, the two flanges 113 are arranged in parallel and at intervals, and the two flanges 113 are both located on one side of the middle body 112 away from the access head 111; the number of the intermediate channels 1121 is two, and both the two intermediate channels 1121 are communicated with the access port 1111, one of the intermediate channels 1121 is communicated with the outflow channel 1131 of one of the flanges 113, and the other intermediate channel 1121 is communicated with the outflow channel 1131 of the other flange 113; the valve core assemblies 12 are of two types, wherein one type of the valve core assembly 12 is used for controlling the opening and closing of one of the intermediate channels 1121, the other type of the valve core assembly 12 is used for controlling the opening and closing of the other one of the intermediate channels 1121, and the assembling mode of each valve core assembly 12 and the integrated valve body 11 is the same. The overall concept of the pressure relief valve 10 for a wedge flowmeter in the second embodiment is the same as that of the pressure relief valve 10 for a wedge flowmeter in the first embodiment, and the overall effect is substantially the same as that of the pressure relief valve 10 for a wedge flowmeter in the first embodiment, and therefore, the description thereof is omitted.
Furthermore, the two flanges 113 are both located on one side of the middle body 112 away from the access head 111, and a connecting line between a middle point of the axes of the two flanges 113 and a central point of the middle body 112 forms a virtual isosceles triangle, so that the volume of the whole integrated valve body 11 can be reduced maximally.
Further, the access head 111 is located at the center of the surface of the middle body 112. In this manner, when the adapter 111 is installed at the pressure tapping port of the wedge flowmeter 20, the two flanges 113 are symmetrically distributed with respect to the adapter 111 to avoid other components as much as possible.
The pressure relief valve 10 for the wedge flowmeter in the second embodiment is different from the application scenario of the pressure relief valve 10 for the wedge flowmeter in the first embodiment. As shown in particular in fig. 8 to 9.
Fig. 8 is a schematic structural diagram of a pressure measurement system to which the pressure measurement valve 10 for a wedge flowmeter according to the second embodiment is applied; specifically, a pair of pressure measurement ports are provided at the top of the wedge flowmeter 20, and each pressure measurement port is provided with the pressure measurement valve 10 for a wedge flowmeter according to the second embodiment. Referring to fig. 6 and 8, in each pressure measurement valve 10 for a wedge flowmeter, the side of the inlet 111 away from the intermediate body 112 is connected to the wedge flowmeter 20, so that the inlet 1111 communicates with a pressure measurement port, and the pressure measurement valve 10 for a wedge flowmeter is used for achieving top pressure measurement. Therefore, the two transmitters with the pair of pressure taking ports can be realized.
Fig. 9 is a schematic structural diagram of a pressure measurement system to which the pressure measurement valve 10 for a wedge flowmeter according to the second embodiment is applied; specifically, two pairs of pressure taking ports are respectively provided on both sides of the wedge flowmeter 20, and each pressure taking port is provided with the pressure taking valve 10 for the wedge flowmeter in the first embodiment. Referring to fig. 6 and 9, in each pressure measurement valve 10 for a wedge flowmeter, the side of the inlet 111 away from the intermediate body 112 is connected to the wedge flowmeter 20 so that the inlet 1111 communicates with the pressure measurement port, and the pressure measurement valve 10 for a wedge flowmeter is used to achieve horizontal pressure measurement. So, can realize two pairs of pressure ports and take four transmitters.
It should be further noted that, in the pressure tapping valve 10 for the wedge flowmeter according to the second embodiment, the valve core assemblies 12 are of two types, each type of the valve core assembly 12 includes two valve core assemblies 12, the assembling manner of each valve core assembly 12 is the same as that of the integrated valve body 11, the two valve core assemblies 12 of the same type are matched to form a double-valve structure for jointly controlling the opening and closing of the intermediate channel 1121, and the pressure tapping valve 10 for the wedge flowmeter is applied to the wedge flowmeter in which the medium pressure value in the wedge flowmeter 20 is high.
In other embodiments, there is one valve core assembly 12 of each type, and a single valve core assembly 12 controls opening and closing of the intermediate channel 1121, and the pressure tapping valve 10 for the wedge flowmeter is applied to a wedge flowmeter in which a medium pressure value in the wedge flowmeter is a medium-low pressure.
EXAMPLE III
As shown in fig. 10 and 11, the inventive concept of a pressure measurement valve 10 for a wedge flowmeter according to the third embodiment is the same as that of the first embodiment. Compared with the pressure sampling valve for the wedge flowmeter in the first embodiment, the number of the flanges 113 in the third embodiment is four, each two flanges 113 form one group, two flanges 113 in one group of flanges 113 are arranged in parallel and at intervals on one side of the middle body 112, two flanges 113 in the other group of flanges 113 are arranged in parallel and at intervals on the other side of the middle body 112, the two groups of flanges 113 are symmetrically arranged relative to the middle body 112, and the access head 111 and any one of the flanges 113 are respectively located on two adjacent sides of the middle body 112; the number of the middle channels 1121 is four, the four middle channels 1121 are all communicated with the access port 1111, and the four middle channels 1121 are communicated with the outflow channels 1131 of the four flanges 113 in a one-to-one correspondence manner; the valve core assemblies 12 are of four types, the four types of valve core assemblies 12 are used for controlling the on-off of the four intermediate channels 1121 in a one-to-one correspondence manner, and the assembly manner of each valve core assembly 12 is the same as that of the integrated valve body 11. The overall concept of the pressure relief valve 10 for a wedge flowmeter in the third embodiment is the same as that of the pressure relief valve 10 for a wedge flowmeter in the first embodiment, and the overall effect is substantially the same as that of the pressure relief valve 10 for a wedge flowmeter in the first embodiment, and therefore, the description thereof is omitted. And each valve core assembly 12 is assembled in the same manner as the integrated valve body 11.
Furthermore, two sets of flanges 113 are symmetrically arranged relative to the intermediate body 112, the access head 111 and any one of the flanges 113 are respectively located on two adjacent sides of the intermediate body 112, and a connecting line between the central point of the axis of the two flanges 113 in each set of flanges 113 and the central point of the intermediate body 112 forms a virtual isosceles triangle, so that the volume of the whole integrated valve body 11 can be maximally reduced.
Further, the access head 111 is located at the center of the surface of the middle body 112. In this manner, when the adapter 111 is installed at the pressure tapping port of the wedge flowmeter 20, the two sets of flanges 113 are symmetrically distributed with respect to the adapter 111 to avoid other components as much as possible.
The pressure relief valve 10 for the wedge flowmeter in the third embodiment is different from the application scenario of the pressure relief valve for the wedge flowmeter in the first embodiment. As shown in particular in fig. 12.
Fig. 12 is a first schematic structural diagram of a pressure measurement system to which the pressure measurement valve 10 for a wedge flowmeter according to the third embodiment is applied; specifically, a pair of pressure measurement ports are provided at the top of the wedge flowmeter 20, each pressure measurement port is provided with the pressure measurement valve 10 for a wedge flowmeter according to the third embodiment, and with reference to fig. 11 and 12, in each pressure measurement valve 10 for a wedge flowmeter, one side of the access head 111 away from the intermediate body 112 is connected to the wedge flowmeter 20 so that the access port 1111 is communicated with the pressure measurement port, and the pressure measurement valve 10 for a wedge flowmeter is used to realize top pressure measurement. Therefore, the four transmitters with the pair of pressure taking ports can be realized.
It should be further noted that, in the pressure relief valve 10 for a wedge flowmeter according to the third embodiment, the valve core assemblies 12 are of four types, each type of valve core assembly 12 includes four valve core assemblies 12, the assembly manner of each valve core assembly 12 is the same as that of the integrated valve body 11, two valve core assemblies 12 of the same type are matched to form a double-valve structure for jointly controlling the opening and closing of one intermediate channel 1121, and the pressure relief valve 10 for a wedge flowmeter is applied to a wedge flowmeter in which the medium pressure value in the wedge flowmeter is high.
In other embodiments, there is one valve core assembly 12 of each type, and a single valve core assembly 12 controls opening and closing of the intermediate channel 1121, and the pressure tapping valve 10 for the wedge flowmeter is applied to a wedge flowmeter in which a medium pressure value in the wedge flowmeter is a medium-low pressure.
In the pressure measurement valve 10 for a wedge flowmeter in the second to third embodiments, the problem that one wedge flowmeter 20 with a plurality of transmitters cannot be realized consistently for many years is solved, and the requirement of safety interlock of the existing petrochemical device can be met.
It should be noted that the transmitters described above are all differential pressure transmitters.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. A pressure taking valve for a wedge flowmeter, comprising:
the integrated valve body comprises an access head, an intermediate body fixedly connected with the access head and a flange fixedly connected with the intermediate body, wherein the access head, the intermediate body and the flange are of an integrated structure, the access head and the flange are respectively positioned on two adjacent sides of the intermediate body or on two opposite sides of the intermediate body, the access head is provided with an access port, the intermediate body is provided with an intermediate channel communicated with the access port, and the flange is provided with an outflow channel communicated with the intermediate channel; and
the valve core assembly is arranged on the integrated valve body and used for controlling the on-off of the middle channel;
one side of the access head, which is far away from the intermediate body, is used for being connected with a wedge-type flowmeter, so that the access port is communicated with a pressure taking port of the wedge-type flowmeter, and the end face, which is far away from the intermediate body, of the flange is used for being connected with a transmitter.
2. The pressure relief valve for the wedge type flowmeter of claim 1, wherein the intermediate body is of a rectangular parallelepiped structure, and the side face of the intermediate body close to the flange is parallel to the end face of the flange close to the intermediate body.
3. The pressure relief valve for the wedge flowmeter according to claim 1, wherein a flushing channel extending through the flange is further provided in the flange, the flushing channel is communicated with the outflow channel, and both ends of the flushing channel are operatively blocked or unblocked.
4. The pressure relief valve for the wedge type flowmeter according to any one of claims 1 to 3, wherein there are two flanges, and the two flanges are arranged in parallel and spaced apart from each other, and are both located on a side of the intermediate body away from the access head;
the number of the middle passages is two, the two middle passages are communicated with the access port, one of the middle passages is communicated with the outflow passage of one of the flanges, and the other middle passage is communicated with the outflow passage of the other flange;
the valve core assemblies are of two types, wherein one type of the valve core assembly is used for controlling the on-off of one of the middle channels, and the other type of the valve core assembly is used for controlling the on-off of the other middle channel.
5. The pressure relief valve for a wedge flow meter according to claim 4, wherein said inlet head is located at the center of said intermediate body surface.
6. The pressure relief valve for the wedge flowmeter according to any one of claims 1 to 3, wherein the number of the flanges is four, and each two of the flanges is a group, two of the flanges in one group of the flanges are arranged in parallel and spaced at one side of the intermediate body, two of the flanges in the other group of the flanges are arranged in parallel and spaced at the other side of the intermediate body, two groups of the flanges are symmetrically arranged relative to the intermediate body, and the access head and any one of the flanges are respectively located on two adjacent sides of the intermediate body;
the four middle channels are communicated with the inlet, and are communicated with the outflow channels of the four flanges in a one-to-one correspondence manner;
the valve core assemblies are of four types, and the four types of valve core assemblies are used for controlling the on-off of the four middle channels in a one-to-one correspondence mode.
7. The pressure relief valve for a wedge flow meter of claim 6, wherein said access head is located at the center of said intermediate body surface.
8. A pressure tapping system, comprising:
a wedge-type flow meter having a pressure tap; and
a pressure relief valve for a wedge flow meter as defined in any one of claims 1 to 7, wherein a side of said inlet remote from said intermediate body is connected to said wedge flow meter so that said inlet communicates with said pressure relief port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110804862.XA CN113639808A (en) | 2021-07-16 | 2021-07-16 | Pressure taking valve and pressure taking system for wedge-type flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110804862.XA CN113639808A (en) | 2021-07-16 | 2021-07-16 | Pressure taking valve and pressure taking system for wedge-type flowmeter |
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| CN113639808A true CN113639808A (en) | 2021-11-12 |
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| CN202110804862.XA Pending CN113639808A (en) | 2021-07-16 | 2021-07-16 | Pressure taking valve and pressure taking system for wedge-type flowmeter |
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