Transmitter with replaceable flow sensor

Abstract

The utility model belongs to the field of fluid flow measurement, and particularly relates to a transmitter with a replaceable flow sensor. In order to facilitate replacement of the flow sensor in a pipe network, the utility model provides a transmitter with a replaceable flow sensor. The transmitter with the replaceable flow sensor comprises a shell and a sealing cover which are used for jointly defining a containing cavity, the shell comprises an upstream connector and a downstream connector, the containing cavity is provided with a gas inlet and a gas outlet, the sealing cover is detachably installed on the shell, and the sealing cover is in sealing fit with the shell; the sealing cover is provided with a flow sensor and an overflowing part, the overflowing part is located in the containing cavity and provided with an overflowing channel communicated with the gas inlet and / or the gas outlet, and the flow sensor is used for measuring the gas flow in the overflowing channel. The upstream connector, the overflowing piece and the downstream connector are arranged in a split mode, and a proper flow sensor and the overflowing piece matched with the flow sensor can be selected according to actual working conditions, so that the transmitter adopts different measurement principles.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of measuring the flow of fluid, especially relate to a kind of variable transmitter of replaceable flow sensor. BACKGROUND

[0002] When drilling in well, gas needs to be checked and monitored, there are many kinds of variable transmitters on the market, but these variable transmitters only use one kind of measurement principle for measuring flow, that is, these variable transmitters can only be applied to one kind of working condition. Therefore, in the prior art, the variable transmitter needs to be selected according to the actual working condition in the well.

[0003] Specifically, the variable transmitter includes a housing and a flow sensor mounted on the housing, the housing includes a flow tube having an upstream connector and a downstream connector for connecting a pipe network, and the flow sensor is used to measure the gas flow in the flow tube.

[0004] Among them, the measurement principle of the flow sensor in the variable transmitter mainly includes the following kinds:

[0005] (1) differential pressure detection principle;

[0006] (2) differential pressure detection + cyclic self-excitation principle;

[0007] (3) ultrasonic detection principle;

[0008] (4) ultrasonic detection + cyclic self-excitation principle.

[0009] Compared with the first (1) measurement principle, the second (2) measurement principle has a larger measurement range and higher measurement accuracy, and similarly, compared with the third (3) measurement principle, the fourth (4) measurement principle has a larger measurement range and higher measurement accuracy; the difference between the first (1) measurement principle and the third (3) measurement principle is that the first (1) measurement principle is more suitable for measuring high flow rate gas, and the third (3) measurement principle is more suitable for measuring low flow rate gas.

[0010] In the prior art, when the working condition in the well changes, the old variable transmitter needs to be removed from the pipe network, and another new variable transmitter with a different measurement principle (essentially replacing the flow sensor in the pipe network) needs to be replaced, which is costly and troublesome to replace; in addition, when the flow sensor of the variable transmitter for measuring flow is damaged, the old variable transmitter needs to be removed from the pipe network, and another new variable transmitter with a different measurement principle needs to be replaced, which is costly and troublesome to replace. INVENTION CONTENTS

[0011] The utility model aims to provide a kind of variable transmitter of replaceable flow sensor, to solve the technical problem that the entire variable transmitter needs to be removed from the pipe network when replacing the flow sensor, which is troublesome to replace.

[0012] To achieve the above object, the utility model provides a technical scheme of the transmitter with replaceable flow sensor:

[0013] A transmitter with replaceable flow sensor, including the casing and sealing cover for together surrounding the containing cavity, the casing includes the upstream joint and downstream joint for connecting the pipe network, the containing cavity has the gas inlet with upstream joint communication and the gas outlet with downstream joint communication, the sealing cover is detachably installed on the casing, and the sealing cover is sealed with the casing cooperation;The sealing cover is equipped with flow sensor and flow member, and the flow member is located in the containing cavity, and the flow member has the flow passage with gas inlet and / or gas outlet communication, and the flow sensor is used for measuring the gas flow in the flow passage.

[0014] Further, the flow sensor includes differential pressure flow sensor, differential pressure flow sensor is arranged on the side of sealing cover away from the containing cavity, and the sealing cover and flow member are equipped with high pressure gas taking passage and low pressure gas taking passage, which are communicated with differential pressure flow sensor and flow passage, and the flow member is equipped with throttling member in flow passage, and high pressure gas taking passage is located on the upstream of throttling member, and low pressure gas taking passage is located on the downstream of throttling member.

[0015] Further, the flow sensor includes vortex flow sensor, vortex flow sensor is arranged on the side of sealing cover away from the containing cavity, and vortex street generator is arranged in the flow passage, and the sealing cover and flow member are equipped with vortex street gas taking passage, which is communicated with vortex flow sensor and flow passage.

[0016] Further, the flow member includes cylindrical portion and connecting portion for fixedly connecting cylindrical portion and sealing cover, and vortex street gas taking passage is arranged on cylindrical portion, connecting portion and sealing cover.

[0017] Further, the flow sensor includes ultrasonic flow sensor, and the flow member is equipped with mounting hole communicated with flow passage, and ultrasonic flow sensor is installed on mounting hole.

[0018] Further, vortex street generator is arranged in flow passage, and vortex street generator is located on the upstream of ultrasonic flow sensor.

[0019] Further, the flow member includes cylindrical portion and hollow circular platform portion with central passage, the outer diameter of the smaller bottom surface of hollow circular platform portion is same with the outer diameter of cylindrical portion, the central passage and the internal passage of cylindrical portion jointly constitute the flow passage, and mounting hole is located on cylindrical portion.

[0020] Further, the flow member is integrally formed with sealing cover.

[0021] Further, the sealing cover is detachably installed on the casing through bolt.

[0022] Furthermore, a sealing ring is provided between the sealing cover and the housing on the side near the receiving cavity, and the axial direction of the bolt is perpendicular to the axial direction of the sealing ring.

[0023] The advantages of the replaceable flow sensor transmitter provided by this utility model are as follows: This utility model is a pioneering invention. In this utility model, the upstream connector, downstream connector, and flow passage are separate structures. When replacing the flow sensor, only the sealing cap, flow passage, and flow sensor need to be replaced, without replacing the entire transmitter. Therefore, it is not necessary to remove the transmitter from the pipeline network, which facilitates flow sensor replacement. Furthermore, multiple flow sensors use the same housing specification, which helps reduce costs.

[0024] When measuring flow rate, first, connect the housing to the pipeline network; then, install the sealing cap on the housing. Gas in the pipeline network enters the receiving cavity from the upstream connector. Since the housing and sealing cap are sealed, all the gas flows out from the downstream connector, connecting the flow passage to the gas inlet and / or gas outlet. The gas flowing through the flow passage is equivalent to the flow rate of the gas entering and / or flowing out of the receiving cavity. By measuring the gas flow rate in the flow passage using a flow sensor, the flow rate of the gas flowing through the transmitter (i.e., the pipeline network) can be conveniently reflected. Attached Figure Description

[0025] Figure 1 This is a perspective view of the transmitter with a replaceable flow sensor according to the present invention, which adopts the differential pressure detection + cyclic self-excitation principle.

[0026] Figure 2 This is a schematic diagram of the structure of the transmitter with replaceable flow sensor of this utility model, which adopts the differential pressure detection + cyclic self-excitation principle;

[0027] Figure 3 for Figure 2 A schematic diagram of the flow-through components and sealing caps in the middle;

[0028] Figure 4 for Figure 2 Left view of the flow-through components and sealing cap;

[0029] Figure 5 for Figure 2 Front view of the flow sensor, sealing cap, and flow passage components;

[0030] Figure 6 for Figure 5 AA view;

[0031] Figure 7 This is a perspective view of the transmitter with replaceable flow sensor of this utility model, which adopts the principle of ultrasonic detection + cyclic self-excitation.

[0032] Figure 8 This is a schematic diagram of the structure of the transmitter with replaceable flow sensor of this utility model, which adopts the principle of ultrasonic detection + cyclic self-excitation.

[0033] Figure 9 for Figure 7 Right view of the central sealing cover and flow passage.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Housing; 101. Upstream connector; 102. Downstream connector; 2. Detachable component; 21. Sealing cap; 22. Cylindrical part; 23. Connecting part; 231. Left air intake; 232. Right air intake; 233. Upper air intake; 234. Lower air intake; 24. Differential pressure flow sensor; 25. Vortex flow sensor; 26. Vortex generator; 27. Mounting hole; 28. Hollow frustum part. Detailed Implementation

[0036] To address the problems in the background technology, the core inventive concept of this utility model is to divide the overall flow pipe in the prior art into three parts: an upstream connector, a flow component, and a downstream connector. According to the actual working conditions, a suitable flow sensor and a matching flow component can be selected.

[0037] The present invention will be further described in detail below with reference to the embodiments.

[0038] Specific embodiments of the transmitter with replaceable flow sensor provided by this utility model:

[0039] like Figures 1-9 As shown, in a specific embodiment of the first type, the transmitter with a replaceable flow sensor includes a housing 1 and a sealing cover 21 that together form a receiving cavity. The housing 1 includes an upstream connector 101 and a downstream connector 102 for connecting to a pipeline network. The receiving cavity has a gas inlet communicating with the upstream connector 101 and a gas outlet communicating with the downstream connector 102. The sealing cover 21 is detachably mounted on the housing 1 and is in a sealing fit with the housing 1. The sealing cover 21 is provided with a flow sensor and a flow-through component. The flow-through component is located inside the receiving cavity and has a flow-through channel communicating with the gas inlet and / or the gas outlet. The flow sensor is used to measure the gas flow rate in the flow-through channel. The flow-through component, the sealing cover 21, and the flow sensor constitute a detachable assembly 2.

[0040] For ease of understanding, in this embodiment, the arrangement direction of the upstream connector 101 and the downstream connector 102 is defined as the up-down direction. However, in actual pipeline networks, the arrangement direction of the upstream connector 101 and the downstream connector 102 can also be any direction such as the left-right direction or the front-back direction.

[0041] In the first type of embodiment, the flow passage only communicates with the gas inlet, at this time, the flow sensor measures the gas flow into the containing cavity, thereby reflecting the gas flow in the pipe network.

[0042] In the second type of embodiment, the flow passage communicates with the gas outlet, at this time, the flow sensor measures the gas flow out of the containing cavity, thereby reflecting the gas flow in the pipe network.

[0043] In the third type of embodiment, the flow passage simultaneously communicates with the gas inlet and the gas outlet, at this time, the flow sensor measures the gas flow through the containing cavity, thereby reflecting the gas flow in the pipe network.

[0044] In the present utility model, the upstream joint 101, the downstream joint 102 and the flow piece are in a split structure, when the flow sensor is replaced, the sealing cover 21, the flow piece and the flow sensor can be directly replaced, the whole transmitter does not need to be replaced, the transmitter does not need to be detached from the pipe network, the flow sensor is convenient to replace. Meanwhile, the same size shell 1 is used for various flow sensors, which helps to reduce the cost.

[0045] In the measurement of flow, first, the shell 1 is connected to the pipe network; then, the sealing cover 21 is installed on the shell 1. The gas in the pipe network enters the containing cavity from the upstream joint 101, because the shell 1 and the sealing cover 21 are sealed, all the gas flows out from the downstream joint 102, so that the flow passage communicates with the gas inlet and / or the gas outlet, the gas passing through the flow passage is equivalent to the flow of the gas entering the containing cavity and / or the gas flowing out of the containing cavity, the flow sensor measures the gas flow in the flow passage, which can conveniently reflect the gas flow in the transmitter (i.e. the pipe network).

[0046] On the basis of the first type of embodiment, in order to facilitate the understanding of those skilled in the art, the present utility model also provides four types of transmitters with different measurement principles:

[0047] Referring to Figures 1-6 In the second type of embodiment, the flow sensor includes a differential pressure flow sensor 24, the differential pressure flow sensor 24 is arranged on the side of the sealing cover 21 away from the containing cavity, the sealing cover 21 and the flow piece are provided with a differential pressure gas taking passage communicating the differential pressure flow sensor 24 with the flow passage, at this time, the transmitter adopts a differential pressure detection principle.

[0048] As Figures 1-6As shown, on the basis of the second type of embodiment, in the third type of embodiment, the flow sensor further comprises a vortex flow sensor 25, the vortex flow sensor 25 is arranged on the side of the sealing cover 21 away from the accommodating cavity, a vortex generator 26 is arranged in the flow passage, and the sealing cover 21 and the flow passage member are provided with a vortex gas taking passage which communicates the vortex flow sensor 25 and the flow passage, at this time, the transmitter adopts the differential pressure detection + cyclic self-excitation principle.

[0049] Preferably, the flow passage member comprises a cylindrical portion 22 and a connecting portion 23 for fixedly connecting the cylindrical portion 22 and the sealing cover 21, the hollow passage of the cylindrical portion 22 constitutes the flow passage, and the vortex gas taking passage is arranged on the cylindrical portion 22, the connecting portion 23 and the sealing cover 21, which is simple in structure and convenient to process. The vortex gas taking passage specifically comprises a left gas taking port 231, a right gas taking port 232, an upper gas taking port 233 and a lower gas taking port 234.

[0050] However, in other embodiments, the flow passage member can also be a flow passage block, and the flow passage block is processed with the flow passage, the vortex gas taking passage and the differential pressure gas taking passage.

[0051] Reference Figures 7-9 As shown, in the fourth type of embodiment, the flow sensor comprises an ultrasonic flow sensor, the flow passage member is provided with a mounting hole 27 which communicates with the flow passage, and the ultrasonic flow sensor is mounted on the mounting hole 27, at this time, the transmitter adopts the ultrasonic detection principle.

[0052] As Figures 7-9 As shown, on the basis of the fourth type of embodiment, in the fifth type of embodiment, the flow passage is provided with a vortex generator 26, and the vortex generator 26 is located upstream of the ultrasonic flow sensor, at this time, the transmitter adopts the ultrasonic detection + cyclic self-excitation principle.

[0053] In the fifth-1 type of embodiment, the flow passage member comprises a cylindrical portion 22 and a hollow circular truncated cone portion 28 with a central passage, the outer diameter of the smaller bottom surface of the hollow circular truncated cone portion 28 is the same as the outer diameter of the cylindrical portion 22, the central passage and the internal passage of the cylindrical portion 22 jointly constitute the flow passage, and the mounting hole 27 is located on the cylindrical portion 22, which is simple in structure and can avoid interference between the ultrasonic flow sensor (i.e. two ultrasonic transducers) and the shell 1.

[0054] In the fifth-2 type of embodiment, the flow passage member only comprises a cylindrical portion 22, and the outer diameter of the cylindrical portion 22 is the same as that of the cylindrical portion 22 in the fifth-1 type of embodiment.

[0055] The above flow sensors are all prior art, and the above detection principles are all prior art, which will not be described here.

[0056] In order to facilitate the assembly of the transmitter, the utility model further makes the following improvements:

[0057] In the sixth type of embodiment, the flow passage member is integrally formed with the sealing cover 21, and when installed, the sealing cover 21 is only needed to be installed on the shell 1 along the front-rear direction (or the left-right direction). The sealing cover 21 can be the front cover, the rear cover, the left cover or the right cover of the shell 1, or the sealing cover 21 can simultaneously seal the left side and the front side of the shell 1. In the utility model, the specific structure of the sealing cover 21 and the shell 1 is not limited, as long as the sealing cover 21 can cooperate with the shell 1 to form the accommodating cavity.

[0058] In the seventh type of embodiment, the flow passage member is detachably connected with the sealing cover 21 through the connecting member such as the bolt.

[0059] The utility model makes the following limitations on the connection mode of the sealing cover 21 and the transmitter:

[0060] In the eighth type of embodiment, the sealing cover 21 is detachably installed on the shell 1 through the bolt, which facilitates the installation and removal of the sealing cover 21.

[0061] In the eighth-1 type of embodiment, a sealing ring is arranged between the side of the sealing cover 21 close to the accommodating cavity and the shell 1, the axial direction of the bolt is perpendicular to the axial direction of the sealing ring, that is, the axial direction of the bolt is the left-right direction, and the axial direction of the sealing ring is the front-rear direction. At this time, the bolt perforation does not need to be arranged on the sealing ring, and the structure is simple.

[0062] In the eighth-2 type of embodiment, different from the eighth-1 type of embodiment is that the sealing ring is provided with the bolt perforation for the bolt to pass through, and the bolt is threadedly connected with the shell 1 after passing through the bolt perforation. At this time, the axial direction of the bolt is parallel to the axial direction of the sealing ring.

[0063] It should be noted that the transmitter can also use the detection principle in the prior art, and only the flow sensor, the sealing cover 21 and the flow passage member need to be replaced.

[0064] It should be noted that in the utility model, the specific embodiments are only classified according to specific features, and the specific features are not represented in other categories. For example, the structure of the first type of embodiment can be the same as that of the second type or the third type of embodiment.

[0065] Finally, it should be noted that the above is only the preferred embodiment of the utility model, and is not used to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, and for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified without creative labor, or some technical features can be replaced, or different types of embodiments can be organically combined, so that the utility model is combined intoFigures 1-9 The two specific embodiments given in the above description are of course combinable with the specific embodiments not given in the description and the drawings. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A replaceable flow sensor transmitter, comprising: The utility model provides a kind of gas flow sensor, including the shell and sealing cover for jointly surrounding containing cavity, the shell includes the upstream joint and downstream joint for connecting pipe network, containing cavity has gas inlet with upstream joint and gas outlet with downstream joint, sealing cover is detachably mounted on shell, and sealing cover is sealed with shell cooperation;Flow sensor and overflow piece are provided on sealing cover, overflow piece is located in containing cavity, and overflow piece has overflow passage with gas inlet and / or gas outlet communication, and flow sensor is used to measure the gas flow in overflow passage.

2. The replaceable flow sensor transmitter of claim 1, wherein, The flow sensor includes a differential pressure flow sensor arranged on the side of the sealing cover facing away from the containing cavity, and the sealing cover and the overflow piece are provided with a high-pressure gas taking channel and a low-pressure gas taking channel that communicate the differential pressure flow sensor with the overflow passage, and the overflow piece is provided with a throttling element located in the overflow passage, the high-pressure gas taking channel is located upstream of the throttling element, and the low-pressure gas taking channel is located downstream of the throttling element.

3. The replaceable flow sensor transmitter of claim 2, wherein, The flow sensor includes a vortex flow sensor arranged on the side of the sealing cover facing away from the containing cavity, and the sealing cover and the overflow piece are provided with a vortex gas taking channel that communicates the vortex flow sensor with the overflow passage.

4. The replaceable flow sensor transmitter of claim 3, wherein, The overflow piece includes a cylindrical portion and a connecting portion for fixedly connecting the cylindrical portion with the sealing cover, and the vortex gas taking channel is arranged on the cylindrical portion, the connecting portion and the sealing cover.

5. The replaceable flow sensor transmitter of claim 1, wherein, The flow sensor includes an ultrasonic flow sensor, and the overflow piece is provided with a mounting hole communicating with the overflow passage, and the ultrasonic flow sensor is mounted on the mounting hole.

6. The replaceable flow sensor transmitter of claim 5, wherein, The overflow passage is provided with a vortex generator, and the vortex generator is located upstream of the ultrasonic flow sensor.

7. The replaceable flow sensor transmitter of claims 5 or 6, wherein, The overflow piece includes a cylindrical portion and a hollow circular platform portion having a central passage, the outer diameter of the smaller bottom surface of the hollow circular platform portion is the same as the outer diameter of the cylindrical portion, the central passage and the internal passage of the cylindrical portion jointly constitute the overflow passage, and the mounting hole is located on the cylindrical portion.

8. The replaceable flow sensor transmitter of any one of claims 1-6, wherein, The overflow piece is integrally formed with the sealing cover.

9. The replaceable flow sensor transmitter of any one of claims 1-6, wherein, The sealing cover is detachably mounted on the shell by bolts.

10. The replaceable flow sensor transmitter of claim 9, wherein, A sealing ring is arranged between the side of the sealing cover close to the containing cavity and the shell, and the axial direction of the bolts is perpendicular to the axial direction of the sealing ring.

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