CN217818880U

CN217818880U - Throttling flowmeter

Info

Publication number: CN217818880U
Application number: CN202222190678.3U
Authority: CN
Inventors: 赵裕宝; 遇明霞
Original assignee: Longkou Bosida Instrument Co ltd
Current assignee: Longkou Bosida Instrument Co ltd
Priority date: 2022-08-19
Filing date: 2022-08-19
Publication date: 2022-11-15
Anticipated expiration: 2032-08-19

Abstract

The utility model provides a throttle formula flowmeter, includes throttling arrangement, throttling arrangement is including the hole that is used for the medium to pass through, be provided with the fixed throttle portion of evagination in the hole, the cross-section of fixed throttle portion is less than the cross-section of hole, throttling arrangement is provided with the pressure pipe in the both sides of fixed throttle portion, the pressure pipe all communicates with the hole, just the pressure pipe is kept away from the one end of throttling arrangement and is connected with differential pressure transmitter, two through the valves the pressure pipe all is provided with the pressure valve, fixed throttle portion still is connected with the movable throttle that can dismantle, the movable throttle includes the orifice, just the cross-section of orifice is less than the cross-section of fixed throttle portion. On the basis of the existing throttling type flowmeter, the detachable movable throttling device is added, and the movable throttling device is provided with a plurality of specifications, so that the applicability is stronger, and the expansion function is provided.

Description

Throttling flowmeter

Technical Field

The utility model relates to a flow measurement equipment technical field specifically is a throttle formula flowmeter.

Background

Throttling type flowmeter mainly includes throttling arrangement and differential pressure transmitter, wherein, after the fluid is full of the pipeline in the throttling arrangement, the steam bundle forms local contraction in throttling element department, therefore the corresponding increase of velocity of flow, the static pressure reduces, can produce the static pressure difference in throttling element both sides, and in this process, the velocity of flow is bigger, the static pressure difference is bigger, and can calculate the flow through this static pressure difference through differential pressure transmitter, the throttling element among the existing device can't be changed, namely the model can't be changed, when needing to change, need whole change flowmeter, the suitability is relatively poor.

SUMMERY OF THE UTILITY MODEL

For solving the relatively poor problem of above-mentioned current throttle formula flowmeter suitability, the utility model provides a throttle formula flowmeter.

The utility model discloses technical scheme as follows:

the utility model provides a throttle formula flowmeter, includes throttling arrangement, throttling arrangement is including the hole that is used for the medium to pass through, be provided with the fixed throttle portion of evagination in the hole, the cross-section of fixed throttle portion is less than the cross-section of hole, throttling arrangement is provided with the pressure pipe in the both sides of fixed throttle portion, the pressure pipe all communicates with the hole, just the pressure pipe is kept away from the one end of throttling arrangement and is connected with differential pressure transmitter, two through the valves the pressure pipe all is provided with the pressure valve, fixed throttle portion still is connected with the movable throttle that can dismantle, the movable throttle includes the orifice, just the cross-section of orifice is less than the cross-section of fixed throttle portion. When the movable throttler has problems or needs to be replaced due to the problem of applicability, the movable throttler is convenient, and the whole device does not need to be changed.

On the basis of the structure, furthermore, after the movable throttle is connected with the fixed throttle part, two ends of the movable throttle do not exceed the position of the pressure guiding pipe. Namely, the original pressure guiding pipe still can play a role without replacement,

preferably, the orifice of the movable restrictor is a trumpet hole, i.e. the opening size of the inlet end is larger than that of the outlet end.

The specific structure of the movable throttle is that the movable throttle further comprises a connecting part and a limiting part, wherein the cross section of the connecting part is smaller than that of the hole, and the connecting part can be detachably connected with the fixed throttle part.

Preferably, the fixed throttle part is provided with a counter bore with threads, the connecting part is provided with a through hole corresponding to the counter bore, a bolt is arranged to penetrate through the through hole and is connected with the counter bore, and the connecting part and the fixed throttle part are fixed.

Preferably, a seal ring is provided between the connecting portion and the fixed throttle portion. For improved sealing.

Preferably, the movable throttle is provided in plurality, and the orifice has a different cross-sectional area, so that different movable throttles can be replaced as required.

On the basis of the structure, furthermore, the distance between the fixed throttling part and the opening of the adjacent hole is less than 10cm, so that the throttling device can be installed and disassembled, and if the distance is too large, the disassembly and the assembly can be blocked.

Specifically, throttling arrangement includes first pipe fitting and the second pipe fitting of fixed connection, and first pipe fitting and second pipe fitting fixed connection.

Preferably, the throttling device is connected with the differential pressure transmitter through an isolation connector, and the distance between the throttling device and the differential pressure transmitter is large.

The beneficial effects of the utility model reside in that: the utility model relates to a throttle formula flowmeter, on the basis of current throttle formula flowmeter, increase detachable movable throttle to movable throttle sets up a plurality of specifications, and the suitability is stronger, and under the condition of not installing movable throttle, still can detect through fixed throttle portion, provides extended functionality on original basis in other words, more is applicable to current application scene.

Drawings

The aspects and advantages of the present application will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.

In the drawings:

fig. 1 is a side view schematic diagram of the present invention (without a movable restrictor installed);

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a schematic view of the throttling device of the present invention;

fig. 4 is a schematic structural view of the movable restrictor of the present invention;

the components represented by the reference numerals in the figures are:

1. a throttling device; 11. a first pipe member; 12. a second pipe member; 13. a fixed throttle; 2. a pressure guiding pipe; 3. A pressure-introducing valve; 4. a valve block; 5. a differential pressure transmitter; 6. a movable restrictor; 61. a connecting portion; 62. a restricting section; 63. an orifice; 7. an isolating connector.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It should be noted that these embodiments are provided so that this disclosure may be understood more completely and will fully convey the scope of the disclosure to those skilled in the art, which can be embodied in various forms without being limited to the embodiments set forth herein.

Examples

The throttling flowmeter shown in fig. 1 comprises a throttling device 1, wherein the throttling device 1 comprises a hole for a medium to pass through, a convex fixed throttling part 13 is arranged in the hole, the cross section of the fixed throttling part 13 is smaller than that of the hole, the flow speed of the medium in the hole is constant, but when the medium passes through the fixed throttling part 13, the cross section is reduced, so that the flow speed of the medium can be increased, the throttling device has the same function as the conventional throttling device 1, static pressure difference is provided, and the fixed throttling part 13 is a throttling piece in the conventional throttling device 1, namely, the throttling device can provide the same function as the conventional structure.

Further, throttling arrangement 1 is provided with the pressure pipe 2 in the both sides of fixed throttle portion 13, pressure pipe 2 all communicates with the hole, just pressure pipe 2 is kept away from the one end of throttling arrangement 1 and is connected with differential pressure transmitter 5 through valves 4, and differential pressure transmitter 5 can carry out the measuring of flow through the mode that detects static pressure difference, can exert the function the same with current structure.

Through above-mentioned structure, can realize measuring and calculating the function of flow through quiet pressure differential, but above-mentioned structure is the same basically with current structure, and the shortcoming lies in that the suitability is relatively poor, and fixed throttle 13's structure is fixed promptly, if the problem appears, whole mechanism all needs to be changed, and can't carry out the regulation of fixed throttle 13 cross sectional area, for this reason, this device improves on the basis of above-mentioned structure, and concrete structure is:

as shown in fig. 1, two pressure pipes 2 are provided with pressure valves 3, and the whole pressure pipe 2 can be controlled by opening and closing the pressure valves 3.

As shown in fig. 2, on the basis of the above structure, a movable throttle 6 is added, and the specific structure is as follows:

the fixed throttling part 13 is also connected with a detachable movable throttling part 6, the movable throttling part 6 comprises a connecting part 61 and a limiting part 62, the section of the connecting part 61 is smaller than that of the hole, and the section of the limiting part 62 is smaller than that of the fixed throttling part 13, so that the whole movable throttling part 6 can be plugged into the throttling device 1, and the connecting part 61 can be detachably connected with the fixed throttling part 13 to play a role.

As shown in fig. 3, the above-mentioned detachable connection is specifically as follows: the fixed throttling part 13 is provided with a threaded counter bore, the connecting part 61 is provided with a through hole corresponding to the counter bore, a bolt is arranged to penetrate through the through hole and is connected with the counter bore, the connecting part 61 and the fixed throttling part 13 are fixed, the connecting part 61 and the fixed throttling part 13 are directly fixed in a flange-like connection mode and can be detached, and meanwhile, a sealing ring is arranged between the connecting part 61 and the fixed throttling part 13. For improved sealing.

Furthermore, the movable throttle 6 can be fixed to the fixed throttle 13 without leakage of the medium by the above structure, and if the medium passes through the movable throttle, the following structure is provided:

the movable orifice 6 includes an orifice 63, and the orifice 63 has a cross section smaller than that of the fixed orifice 13. Therefore, on the basis of the original fixed throttling part 13, the cross section through which the medium passes is reduced, the flow speed is further improved, the requirement for the specification change of the throttling piece is further met, and better applicability is obtained.

Moreover, a plurality of the movable throttles 6 are provided, and the cross-sectional areas of the orifices 63 are different, so that different movable throttles 6 can be replaced as required.

Finally, it is possible to replace the movable throttle 6 directly when the movable throttle 6 is defective or needs to be replaced due to a problem in terms of suitability, without the need to change the entire device.

Preferably, after the movable throttle 6 and the fixed throttle 13, both ends of the movable throttle 6 do not exceed the position of the pressure guiding pipe 2. The original pressure guiding pipe 2 can still play a role, the pressure guiding pipe does not need to be replaced, and the previous structure can be completely used.

The orifice 63 of the movable throttle 6 is a bell-mouth, i.e., the opening size of the inlet end is larger than that of the outlet end. And when the medium passes through, the flow is smoother.

Meanwhile, in the use process of the above structure, because the movable throttle 6 and the fixed throttle 13 are fixed inside the throttle device 1, the corresponding bolt tightening mechanism needs to be inserted into the throttle device 1, if the length is too large, the torque requirement of the bolt tightening mechanism is high, and therefore, in the case of using a conventional structural member:

the distance between the fixed throttling part 13 and the opening of the adjacent hole is smaller than 10cm, so that the throttler can be mounted and dismounted, and the problem that the mounting and dismounting are blocked due to too large spacing distance is avoided.

In addition to the above structure, the following structure is provided:

throttling arrangement 1 is connected through isolation connector 7 between 5 with differential pressure transmitter, and the interval is great, consequently when medium temperature is higher or lower, differential pressure transmitter 5 still can continue to use, can not go wrong.

Moreover, throttling arrangement 1 includes first pipe fitting 11 and second pipe fitting 12 of fixed connection, and first pipe fitting 11 and second pipe fitting 12 fixed connection, rather than overall structure, ensures that throttling arrangement 1's manufacture process accords with the design demand more, at first behind first pipe fitting 11 or the fixed throttle portion 13 of second pipe fitting 12, again with both fixed connection, compare in carrying out whole processing to throttling arrangement 1 through reaming mode, and the cost is lower.

Claims

1. The utility model provides a throttle formula flowmeter, its characterized in that includes throttling arrangement (1), throttling arrangement (1) is including the hole that is used for the medium to pass through, be provided with the fixed throttle portion (13) of evagination in the hole, the cross-section of fixed throttle portion (13) is less than the cross-section of hole, throttling arrangement (1) is provided with pressure leading pipe (2) in the both sides of fixed throttle portion (13), pressure leading pipe (2) all communicates with the hole, just the one end that throttling arrangement (1) was kept away from in pressure leading pipe (2) is connected with differential pressure transmitter (5), two through valves (4) pressure leading pipe (2) all is provided with pressure leading valve (3), fixed throttle portion (13) still are connected with movable throttle (6) that can dismantle, movable throttle (6) include orifice (63), just the cross-section of orifice (63) is less than the cross-section of fixed throttle portion (13).

2. A throttle-type flowmeter according to claim 1, characterized in that, after the movable throttle (6) is connected with the fixed throttle (13), the two ends of the movable throttle (6) do not exceed the position of the pressure guiding pipe (2).

3. A throttle flow meter according to claim 1, characterized in that the throttle orifice (63) of the movable throttle device (6) is a trumpet orifice, i.e. the opening size at the inlet end is larger than the opening size at the outlet end.

4. A throttle-type flow meter according to claim 1, characterized in that the movable throttle (6) further comprises a connecting portion (61) and a restricting portion (62), the connecting portion (61) having a smaller cross-section than the bore and being detachably connectable to the fixed throttle portion (13).

5. A throttle flow meter according to claim 4, characterized in that the fixed throttle part (13) is provided with a threaded counter bore, the connecting part (61) is provided with a through hole corresponding to the counter bore, a bolt is arranged to pass through the through hole and to be counter-bored, and the connecting part (61) and the fixed throttle part (13) are fixed.

6. A throttle flow meter according to claim 4, characterized in that a sealing ring is arranged between the connecting part (61) and the fixed throttle part (13).

7. A throttle-type flow meter according to claim 1, characterized in that said movable throttle (6) is provided in plural and that the cross-sectional areas of the throttle holes (63) are different.

8. A throttling flow meter according to claim 1, characterized in that the fixed restriction (13) has a distance dimension of less than 10cm from the opening of the adjacent bore.

9. A throttling flowmeter according to claim 1, characterized in that the throttling means (1) comprises a first pipe member (11) and a second pipe member (12) which are fixedly connected.

10. A throttling flowmeter according to claim 1, characterized in that the throttling means (1) is connected to the differential pressure transmitter (5) by means of an isolating connector (7).