Reducing wedge-shaped flowmeter

Abstract

The utility model provides a reducing type wedge-shaped flow meter. The reducing wedge-shaped flow meter comprises a flow meter body, a first connecting pipe and a second connecting pipe, wherein two reducing mechanisms are arranged on the flow meter body; the two ends of the flowmeter body are fixedly connected with first flange plates, the first flange plates are in threaded connection with a plurality of first bolts, the flowmeter body is fixedly connected with a measuring flange through bolts, the measuring flange is fixedly connected with a measuring guide pipe in a penetrating mode, and the flowmeter body is fixedly connected with a pressure tapping flange through bolts. A pressure tapping guide pipe is fixedly connected to the pressure tapping flange in a penetrating mode, and a wedge-shaped block is fixedly connected into the flow meter body. The reducing mechanism comprises a second flange plate, and the second flange plate is fixedly connected to the first flange plate through a first bolt. The reducing type wedge-shaped flow meter has the advantages that the installation difficulty can be reduced, and the accuracy of detection data can be improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to wedge flowmeter technical field, especially relate to a reduced diameter wedge flowmeter. BACKGROUND

[0002] Wedge flowmeter is a new throttling differential pressure flow measuring instrument, it can carry out high precision flow measurement in the fluid condition of high viscosity, low Reynolds number, Reynolds number, 500 can use, has incomparable advantage and irreplaceable function in the flow measurement occasion of low flow rate, small flow, big pipe diameter. Wedge flowmeter is mainly used for flow measurement of medium such as high viscosity heavy oil, residual oil, diesel, machine oil, industrial coal gas, coke oven gas, blast furnace gas, producer gas, city gas, hydrogen, nitrogen, air, water vapor, sewage liquid etc. This flowmeter has simple structure, no movable parts, not easy to be worn by fluid, stable working performance, reliable, long service life.

[0003] Through the retrieval, the existing patent (announcement number: CN217716511 U) discloses a reduced diameter wedge flowmeter, including measuring pipe and differential pressure signal acquisition processing unit installed on the measuring pipe, its characteristics are that the measuring pipe includes integrated inlet contraction section, throat and outlet diffusion section, the inlet contraction section is a straight contraction section, the contraction angle α≤30°;The outlet diffusion section is symmetrical with the inlet contraction section structure;The wedge flowmeter is installed in the measuring pipe;The wedge flowmeter is provided with upstream pressure pipe and downstream pressure pipe on both sides. Solve the problem of "large pipe diameter small flow" fluid flow measurement on site, especially suitable for the measurement of dirty, viscous, easy to crystallize fluid flow. Solve the user's on-site pipeline transformation problem, reduce the cost and workload of purchasing instruments and pipeline transformation. At the same time, the caliber application range of wedge flowmeter flow measurement is widened.

[0004] However, the above structure still has some deficiencies, the reduced diameter wedge flowmeter needs to be customized according to the pipe diameter during use, so as to avoid the backflow of medium caused by the height difference when the diameters are different, thereby affecting the accuracy of detection data, but at the same time, the installation difficulty is increased and the cost is improved.

[0005] Therefore, it is necessary to provide a new reduced diameter wedge flowmeter to solve the above technical problems. UTILITY MODEL CONTENTS

[0006] The utility model solves the technical problem to provide a reduced diameter wedge flowmeter that can reduce installation difficulty and improve detection data accuracy.

[0007] To solve the above technical problems, the reduced diameter wedge flowmeter provided by the utility model comprises: a flowmeter body, a connecting pipe one and a connecting pipe two, two reduced diameter mechanisms are arranged on the flowmeter body;

[0008] Both ends of the flowmeter body are fixedly connected with a flange plate one, a plurality of bolts one are threadedly connected on the flange plate one, a measuring flange is fixedly connected on the flowmeter body through the bolts, a measuring guide pipe is fixedly connected on the measuring flange in penetration, a pressure taking flange is fixedly connected on the flowmeter body through the bolts, and a pressure taking guide pipe is fixedly connected on the pressure taking flange in penetration.

[0009] The diameter reducing mechanism comprises a flange plate two, the flange plate two is fixedly connected on the flange plate one through the bolts one, a diameter reducing assembly is arranged on the flange plate two, a flange plate three is fixedly connected on the diameter reducing assembly, and a plurality of bolts two are threadedly connected on the flange plate three.

[0010] As a further scheme of the utility model, the diameter reducing assembly comprises a small-diameter straight pipe, the small-diameter straight pipe is fixedly connected on the flange plate two, a special-shaped diameter reducing pipe is fixedly connected on one end of the small-diameter straight pipe, and a large-diameter straight pipe is fixedly connected on the other end of the special-shaped diameter reducing pipe.

[0011] As a further scheme of the utility model, the flange plate four is fixedly connected on the connecting pipe one and the connecting pipe two, the flange plate four is fixedly connected with the flange plate three through the bolts two, and the size of the flange plate four is same with that of the flange plate three.

[0012] As a further scheme of the utility model, the size of the large-diameter straight pipe is same with that of the connecting pipe one, and the size of the small-diameter straight pipe is same with that of the flowmeter body.

[0013] As a further scheme of the utility model, the diameter size of one end of the special-shaped diameter reducing pipe is same with that of the connecting pipe one, and the diameter size of the other end of the special-shaped diameter reducing pipe is same with that of the small-diameter straight pipe.

[0014] As a further scheme of the utility model, the differential pressure transmitter is connected on the measuring guide pipe and the pressure taking guide pipe, and the wedge-shaped block is provided with a round corner.

[0015] Compared with the related art, the diameter reducing wedge-shaped flowmeter has the following beneficial effects:

[0016] 1、The diameter reducing mechanism is arranged, so that the medium can flow into the flowmeter body without obstruction under the condition of diameter reduction, and also smoothly flows into the connecting pipe two, the measurement work of the medium is completed, the medium flow is not affected due to the diameter reduction, and the backflow is avoided, so that the accuracy of the detection data is affected.

[0017] 2、The utility model discloses a flange disc two and large diameter straight pipe are set up, can conveniently install the work of reducing diameter mechanism, can also reduce the installation demand of flowmeter body simultaneously, is convenient for subsequent overhauling work to flowmeter body. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to facilitate the person skilled in the art understanding, the utility model makes further explanation below combining with the drawings.

[0019] Figure 1 The whole structure schematic diagram of the reducing diameter wedge flowmeter is provided for the utility model;

[0020] Figure 2 The wedge block structure schematic diagram of the reducing diameter wedge flowmeter is provided for the utility model;

[0021] Figure 3 The reducing diameter mechanism structure schematic diagram of the reducing diameter wedge flowmeter is provided for the utility model;

[0022] Figure 4 The internal structure schematic diagram of the reducing diameter wedge flowmeter is provided for the utility model.

[0023] In the drawing: 1, flowmeter body;2, connecting pipe one;3, connecting pipe two;4, flange disc one;5, bolt one;6, measurement flange;7, measurement guide pipe;8, pressure taking flange;9, pressure taking guide pipe;10, wedge block;11, flange disc two;12, small diameter straight pipe;13, special reducing diameter pipe;14, large diameter straight pipe;15, flange disc three;16, bolt two;17, flange disc four. DETAILED DESCRIPTION

[0024] Please combine with Figure 1 、 Figure 2 、 Figure 3 And Figure 4 Among them, Figure 1 The whole structure schematic diagram of the reducing diameter wedge flowmeter is provided for the utility model; Figure 2 The wedge block structure schematic diagram of the reducing diameter wedge flowmeter is provided for the utility model; Figure 3 The reducing diameter mechanism structure schematic diagram of the reducing diameter wedge flowmeter is provided for the utility model; Figure 4 The internal structure schematic diagram of the reducing diameter wedge flowmeter is provided for the utility model. The reducing diameter wedge flowmeter includes: flowmeter body 1, connecting pipe one 2 and connecting pipe two 3, is provided with two reducing diameter mechanisms on the flowmeter body 1;

[0025] Both ends of the flowmeter body 1 are fixedly connected with flange plate one 4, a plurality of bolts one 5 are threadedly connected on the flange plate one 4, a measuring flange 6 is fixedly connected on the flowmeter body 1 through bolts, a measuring guide pipe 7 is fixedly connected on the measuring flange 6, a pressure taking flange 8 is fixedly connected on the flowmeter body 1 through bolts, a pressure taking guide pipe 9 is fixedly connected on the pressure taking flange 8, and a wedge block 10 is fixedly connected in the flowmeter body 1.

[0026] The diameter reducing mechanism comprises a flange plate two 11, which is fixedly connected on the flange plate one 4 through the bolts one 5, and a diameter reducing assembly is arranged on the flange plate two 11. A flange plate three 15 is fixedly connected on the diameter reducing assembly, and a plurality of bolts two 16 are threadedly connected on the flange plate three 15.

[0027] As shown in Figure 3 , the diameter reducing assembly comprises a small-diameter straight pipe 12, which is fixedly connected on the flange plate two 11, one end of the small-diameter straight pipe 12 is fixedly connected with a special-shaped diameter reducing pipe 13, and the other end of the special-shaped diameter reducing pipe 13 is fixedly connected with a large-diameter straight pipe 14.

[0028] Through the arrangement of the diameter reducing assembly, the resistance of the medium flowing into the flowmeter body 1 can be reduced, and the adverse effects of the resistance on the detection data can be reduced.

[0029] As shown in Figure 1 , the flange plate four 17 is fixedly connected on the connecting pipe one 2 and the connecting pipe two 3, the flange plate four 17 is fixedly connected with the flange plate three 15 through the bolts two 16, and the size of the flange plate four 17 is the same as that of the flange plate three 15.

[0030] Through the arrangement of the flange plate four 17, the diameter reducing assembly can be prepared in advance according to the size of the connecting pipe one 2 before installation, and the installation time can be reduced.

[0031] As shown in Figure 1 , the size of the large-diameter straight pipe 14 is the same as that of the connecting pipe one 2, and the size of the small-diameter straight pipe 12 is the same as that of the flowmeter body 1.

[0032] Through the arrangement that the size of the large-diameter straight pipe 14 is the same as that of the connecting pipe one 2 and the size of the small-diameter straight pipe 12 is the same as that of the flowmeter body 1, the medium in the connecting pipe one 2 can flow into the small-diameter straight pipe 12 without resistance, and the installation of the diameter reducing assembly is also facilitated.

[0033] As shown in Figure 3 , the diameter size of one end of the special-shaped diameter reducing pipe 13 is the same as that of the connecting pipe one 2, and the diameter size of the other end of the special-shaped diameter reducing pipe 13 is the same as that of the small-diameter straight pipe 12.

[0034] Through the setting of the special-shaped reduced-diameter pipe 13, when a small amount of medium flows in the connecting pipe one 2, the medium can flow into the flowmeter body 1 without resistance, and the accuracy of the detection data is improved.

[0035] As shown in Figure 2 The differential pressure transmitter is connected on the corresponding measuring conduit 7 and pressure tapping conduit 9, and the round corner is arranged on the wedge block 10.

[0036] Through the setting of the round corner on the wedge block 10, the service life of the wedge block 10 can be prolonged.

[0037] The working principle of the reduced-diameter wedge flowmeter is as follows:

[0038] First step: in use, first, the reduced-diameter assembly is machined according to the diameter difference between the connecting pipe one 2 and the flowmeter body 1, and the length of the large-diameter straight pipe 14 is adjusted according to the spacing between the connecting pipe one 2 and the connecting pipe two 3, so that the equipment can be smoothly installed, then the flange plate two 11 is aligned with the flange plate one 4, and the installation is completed through the bolt one 5, then the two reduced-diameter mechanisms are installed on the flowmeter body 1 in turn, then the flange plate three 15 is aligned with the flange plate four 17, and the fixing is completed through the bolt two 16, then the flange plate three 15 at the other end is installed, thereby completing the installation work of the flowmeter body 1.

[0039] Second step: then when a small amount of medium flows in the connecting pipe one 2, the medium can flow into the flowmeter body 1 without resistance under the condition of reducing the diameter through the setting of the reduced-diameter mechanism, and also smoothly flows into the connecting pipe two 3, thereby completing the measurement work of the medium, avoiding the poor flow of the medium due to the reduction of the diameter, and avoiding the backflow to affect the accuracy of the detection data.

[0040] It should be noted that the device structure and the drawings of the utility model mainly describe the principle of the utility model, and the setting of the power mechanism, the power supply system and the control system of the device is not completely described in the design principle technology, and under the premise that the above-mentioned principle of the utility model is understood by the person skilled in the art, the specific power mechanism, power supply system and control system can be clearly known, and the control mode of the application file is automatically controlled through the controller, and the control circuit of the controller can be realized through simple programming of the person skilled in the art;

[0041] The standard parts used can be purchased from the market, and can be ordered according to the description and drawings, the specific connection mode of each part adopts the conventional bolt, rivet, welding and other conventional means in the prior art, the mechanical parts and equipment adopt the conventional type in the prior art, and the components known by the person skilled in the art have the structure and principle which can be known by the person skilled in the art through the technical manual or through the conventional experimental method.

[0042] Although the embodiments of the present application have been shown and described, it is to be understood that for the purpose of the present application, the embodiments can be changed, modified, replaced and varied or directly or indirectly applied, without departing from the principles and spirit of the present application, in other related technical fields, the scope of the present application is defined by the appended claims and their equivalents, and the same is included in the patent protection range of the present application.

Claims

1. A reduced bore wedge flowmeter characterized by, Include: The flowmeter body, connecting pipe one and connecting pipe two, two diameter reducing mechanism is arranged on the flowmeter body; Both ends of the flowmeter body are fixedly connected with flange plate one, a plurality of bolts one are threadedly connected on the flange plate one, a measuring flange is fixedly connected on the flowmeter body through bolts, a measuring guide pipe is fixedly connected on the measuring flange, a pressure taking flange is fixedly connected on the flowmeter body through bolts, a pressure taking guide pipe is fixedly connected on the pressure taking flange, and a wedge block is fixedly connected in the flowmeter body. The diameter reducing mechanism comprises a flange plate two, the flange plate two is fixedly connected on the flange plate one through bolts one, a diameter reducing assembly is arranged on the flange plate two, a flange plate three is fixedly connected on the diameter reducing assembly, and a plurality of bolts two are threadedly connected on the flange plate three.

2. The reduced diameter wedge flowmeter of claim 1, wherein: The diameter reducing assembly comprises a small diameter straight pipe, the small diameter straight pipe is fixedly connected on the flange plate two, a special-shaped diameter reducing pipe is fixedly connected on one end of the small diameter straight pipe, and a large diameter straight pipe is fixedly connected on the other end of the special-shaped diameter reducing pipe.

3. The reduced diameter wedge flow meter of claim 1, wherein: The connecting pipe one and the connecting pipe two are fixedly connected with flange plate four, the flange plate four is fixedly connected with the flange plate three through bolts two, and the size of the flange plate four is same with that of the flange plate three.

4. The reduced diameter wedge flow meter of claim 2, wherein: The size of the large diameter straight pipe is same with that of the connecting pipe one, and the size of the small diameter straight pipe is same with that of the flowmeter body.

5. The reduced diameter wedge flow meter of claim 2, wherein: The diameter size of one end of the special-shaped diameter reducing pipe is same with that of the connecting pipe one, and the diameter size of the other end of the special-shaped diameter reducing pipe is same with that of the small diameter straight pipe.

6. The reduced diameter wedge flow meter of claim 1, wherein: Corresponding, the measuring guide pipe and the pressure taking guide pipe are connected with a differential pressure transmitter, and the wedge block is provided with a round corner.

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