CN220670790U

CN220670790U - Mud pressure sensor

Info

Publication number: CN220670790U
Application number: CN202322139300.5U
Authority: CN
Inventors: 冯建宇; 孙亚军; 耿家彬
Original assignee: Shangqiu Rui Control Instrument And Instrument Co ltd
Current assignee: Shangqiu Rui Control Instrument And Instrument Co ltd
Priority date: 2023-08-09
Filing date: 2023-08-09
Publication date: 2024-03-26
Anticipated expiration: 2033-08-09

Abstract

The utility model discloses a mud pressure sensor, which comprises an aviation plug, a shell, an amplifier, a strain gauge and a strain body, wherein a guide port is arranged at the bottom of the strain body, a containing cavity is arranged in the strain body, the strain gauge is arranged at the bottom of the containing cavity, and the strain gauge is positioned above the guide port; the amplifier is arranged in the accommodating cavity and is electrically connected with the strain gauge; the detachable top that sets up at the strain body of casing, and the casing forms airtight space with holding the chamber, aviation plug setting on the casing, aviation plug and amplifier electricity are connected. The technical effects achieved are as follows: the shell and the strain body are detachably connected in a split mode, when the individual parts are damaged, the individual parts can be independently maintained and replaced after being detached, and the use cost is low; the whole sensor has the advantages of high measurement precision, wide measurement range, wide working temperature range, high reliability of the whole sensor, corrosion resistance and impact resistance, and can be widely applied to projects such as offshore drilling platforms, oilfield oil wells, gas wells, exploratory wells, downhole instrument carrier communication and the like.

Description

Mud pressure sensor

Technical Field

The utility model relates to the technical field of drilling engineering in petroleum exploitation, drilling, downhole instrument carrier communication and geological exploration, in particular to a mud pressure sensor.

Background

Union pressure sensors are required to be used in projects such as offshore drilling platforms, oilfield oil wells, gas wells, exploratory wells, downhole instrument carrier communication and the like. The application links are generally bad, so that the applicability requirement on the pressure sensor is high. The union pressure sensor product mainly used at present is a sputtering film pressure sensor, and has the advantages of high integration degree, small measuring range, poor stability, low precision and high maintenance cost. Because the basic process is to jet and print the strain sensitive material onto the metal strain body, the strain sensitive material is of an integrated structure, and the strain sensitive material cannot be repaired once damaged, and is totally scrapped, so that the cost is high.

Disclosure of Invention

Therefore, the utility model provides a mud pressure sensor to solve the problems that the union pressure sensor in the prior art is high in integration degree, cannot be repaired after being damaged and is high in use cost.

In order to achieve the above object, the present utility model provides the following technical solutions:

according to a first aspect of the utility model, a mud pressure sensor comprises an aviation plug, a shell, an amplifier, a strain gauge and a strain body, wherein a flow guide port is arranged at the bottom of the strain body, a containing cavity is arranged in the strain body, the strain gauge is arranged at the bottom of the containing cavity, and the strain gauge is positioned above the flow guide port;

the amplifier is arranged in the accommodating cavity and is electrically connected with the strain gauge;

the shell is detachably arranged at the top of the strain body, the shell and the accommodating cavity form a closed space, the aviation plug is arranged on the shell, and the aviation plug is electrically connected with the amplifier.

Further, the guide opening is in a horn shape.

Further, the portable electric power device also comprises a lifting rope, wherein two ends of the lifting rope are connected with the shell.

Further, two hanging holes are formed in the shell, and the two hanging holes are symmetrically arranged along the axis of the shell respectively;

hanging rings are respectively arranged at two ends of the lifting rope, and each hanging ring is respectively connected with one hanging hole.

Further, the device also comprises a sealing ring, wherein the sealing ring is arranged at the joint of the shell and the strain body.

Further, the strain gauge is adhered to the bottom of the accommodating cavity.

Further, the diversion opening is arranged at the center of the bottom of the strain body.

Further, the shell and the strain body are connected through screws.

The utility model has the following advantages: the shell and the strain body are detachably connected in a split mode, when individual parts are damaged in the use process, the individual parts can be independently maintained and replaced after being detached, and the use cost is low; meanwhile, the whole device has a simple structure, is convenient for production, processing and assembly, and the strain body, the strain gauge and the amplifier are mutually matched for use, so that the whole sensor has the advantages of high measurement precision, wide measurement range, wide working temperature range, high reliability of the whole device, corrosion resistance and impact resistance, and can be widely applied to projects such as offshore drilling platforms, oil fields, oil wells, gas wells, exploratory wells, underground instrument carrier communication and the like.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be derived from the drawings provided without undue effort.

The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the utility model, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present utility model, should fall within the scope of the utility model.

Fig. 1 is a cross-sectional view of a mud pressure sensor according to some embodiments of the present utility model.

In the figure: 1. lifting ropes 2, aviation plugs 3, a shell, 4, an amplifier, 5, strain gauges 6, strain bodies 7, a guide opening 8, a containing cavity 9, hanging holes 10, hanging rings 11 and sealing rings.

Detailed Description

Other advantages and advantages of the present utility model will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

As shown in fig. 1, in an embodiment of the first aspect of the present utility model, a mud pressure sensor includes an aviation plug 2, a housing 3, an amplifier 4, a strain gauge 5 and a strain body 6, wherein a flow guide port 7 is arranged at the bottom of the strain body 6, a containing cavity 8 is arranged in the strain body 6, the strain gauge 5 is arranged at the bottom of the containing cavity 8, the strain gauge 5 is located above the flow guide port 7, the strain gauge 5 adopts a high-precision strain gauge, and the strain gauge 5 is used for measuring the strain quantity and converting micro deformation into an electrical signal; the strain body 6 is used for generating micro strain under the condition of being pressed and driving the high-precision strain gauge to deform;

the amplifier 4 is arranged in the accommodating cavity 8, specifically, the amplifier 4 is detachably arranged in the accommodating cavity 8, the amplifier 4 is electrically connected with the strain gauge 5, and the amplifier 4 is used for amplifying data and transmitting the data;

the housing 3 is detachably arranged at the top of the strain body 6, the housing 3 and the accommodating cavity 8 form a closed space, the aviation plug 2 is arranged on the housing 3, the aviation plug 2 is electrically connected with the amplifier 4, and the aviation plug 2 is used for data communication; specifically, the aviation plug 2 is connected with the shell 3 through a screw, a sealing glue is smeared at the screw, a waterproof rubber pad is added at the joint of the aviation plug 2 and the shell 3, and water vapor is prevented from entering the interior;

specifically, the aerial plug 2 is connected to the amplifier 4 and the strain gauge 5 by a wire, so that the strain gauge 5 is integrated with the amplifier 4 and the aerial plug 2.

In this embodiment, it should be noted that, the casing 3 and the strain body 6 are manufactured by adopting a machining mode, the diversion opening 7 is vertically arranged at the center of the bottom of the strain body 6, the axis of the diversion opening 7 and the axis of the strain body 6 are positioned on the same straight line, the diversion opening 7 is in a horn shape, and the large opening of the diversion opening 7 is vertically downward, so that the blockage of the diversion opening 7 by underground mud can be prevented; when the fluid pressure passes through the diversion port 7, the fluid pressure acts on the strain body 6 at the top of the diversion port 7 to generate micro deformation and acts on the strain gauge 5.

Further, the working principle of the whole sensor is as follows, the whole slurry pressure sensor is installed in a pipeline of the pressure equipment to be measured, when fluid pressure acts on the bottom of the strain body 6 through a horn-shaped flow guiding opening 7 at the bottom of the strain body 6, micro deformation is generated after the bottom of the strain body 6 is pressed, the deformation is conducted to the position of the strain gauge 5, the strain gauge 5 synchronously generates micro deformation to generate resistance change, a corresponding electric signal is generated through the amplifier 4, the electric signal is amplified and conditioned to a marked output signal through the amplifier 4, the marked output signal is output to the aviation plug 2 through a lead, and then a pressure value can be obtained through detecting the output pin of the aviation plug 2.

The technical effects achieved by the embodiment are as follows: the shell 3 and the strain body 6 are detachably connected in a split mode, when individual parts are damaged in the use process, the parts can be independently maintained and replaced after being detached, and the use cost is low; meanwhile, the whole device has a simple structure, is convenient for production, processing and assembly, and the strain body, the strain gauge 5 and the amplifier 4 are mutually matched for use, so that the whole sensor has the advantages of high measurement precision, wide measurement range, wide working temperature range, high reliability of the whole device, corrosion resistance and impact resistance, and can be widely applied to projects such as offshore drilling platforms, oilfield oil wells, gas wells, exploratory wells, downhole instrument carrier communication and the like.

Example 2

As shown in fig. 1, another mud pressure sensor provided in this embodiment has a structure including the whole contents of embodiment 1, and only different parts will be described below.

In this embodiment, the lifting rope 1 is further included, both ends of the lifting rope 1 are connected with the shell 3, and specifically, the lifting rope 1 is preferably a steel wire rope, so that the lifting rope is more durable.

In this embodiment, it should be noted that two hanging holes 9 are provided on the housing 3, the hanging holes 9 are circular holes, and the two hanging holes 9 are symmetrically provided along the axis of the housing 3;

hanging rings 10 are respectively arranged at two ends of the lifting rope 1, and each hanging ring 10 is respectively connected with one hanging hole 9.

The technical effects achieved by the embodiment are as follows: through setting up lifting rope 1, can be convenient for transport and accomodate.

Example 3

In this embodiment, the sealing device further comprises a sealing ring 11, the sealing ring 11 is arranged at the joint of the housing 3 and the strain body 6, and the sealing ring 11 is a rubber ring or a silica gel ring.

In this embodiment, an annular groove is formed on the outer side wall of the connection portion between the housing 3 and the strain body 6, and the seal ring 11 is disposed in the annular groove.

The technical effects achieved by the embodiment are as follows: through setting up sealing washer 11, can effectively ensure the leakproofness of casing 3 and the junction of strain body 6, prevent that steam from getting into inside.

Example 4

In this embodiment, the strain gauge 5 is adhered to the bottom of the accommodating cavity 8, specifically, the strain gauge 5 is adhered to the bottom of the accommodating cavity 8 by a special adhesive; the strain gauge 5 is specifically mounted as follows: the surface mounting part of the strain body 6 (namely the bottom of the accommodating cavity 8) is manually and directionally ground, grinding traces are reserved, after the surface mounting part is cleaned up, an adhesive is smeared and stuck into a high-precision strain gauge, high-temperature curing treatment is carried out, and effective treatment is carried out; in the use process, the strain gauge 5 generates an electric signal with the same proportion as the pressure, the electric signal is input into the amplifier 4 and is conditioned into a standard output signal through the amplifier 4, and the pressure value can be obtained by detecting the output signal.

In this embodiment, it should be noted that, the casing 3 and the strain body 6 are connected by using a screw, specifically, countersunk screw holes are uniformly distributed on the circumference of the connection part of the casing 3 and the strain body 6, and then the casing 3 and the strain body 6 are fixedly connected by matching with the screw to form a sealing body.

While the utility model has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the utility model and are intended to be within the scope of the utility model as claimed.

The terms such as "upper", "lower", "left", "right", "middle" and the like are also used in the present specification for convenience of description, but are not intended to limit the scope of the present utility model, and the changes or modifications of the relative relationship thereof are considered to be within the scope of the present utility model without substantial modification of the technical content.

Claims

1. The mud pressure sensor is characterized by comprising an aviation plug (2), a shell (3), an amplifier (4), a strain gauge (5) and a strain body (6), wherein a flow guide port (7) is arranged at the bottom of the strain body (6), a containing cavity (8) is arranged in the strain body (6), the strain gauge (5) is arranged at the bottom of the containing cavity (8), and the strain gauge (5) is positioned above the flow guide port (7);

the amplifier (4) is arranged in the accommodating cavity (8), and the amplifier (4) is electrically connected with the strain gauge (5);

the utility model discloses a strain body, including shell (3), amplifier (4), aviation plug, amplifier (2), housing (3) detachable sets up the top of strain body (6), just housing (3) with hold chamber (8) and form airtight space, aviation plug (2) set up on housing (3), aviation plug (2) with amplifier (4) electricity is connected.

2. A mud pressure sensor according to claim 1, characterized in that the flow guiding opening (7) is bell-mouthed.

3. A mud pressure sensor according to claim 1, further comprising a lifting rope (1), both ends of the lifting rope (1) being connected to the housing (3).

4. A mud pressure sensor according to claim 3, characterized in that the housing (3) is provided with two hanging holes (9), the two hanging holes (9) being arranged symmetrically along the axis of the housing (3), respectively;

hanging rings (10) are respectively arranged at two ends of the lifting rope (1), and each hanging ring (10) is respectively connected with one hanging hole (9).

5. A mud pressure sensor according to claim 1, further comprising a sealing ring (11), the sealing ring (11) being arranged at the junction of the housing (3) and the strain body (6).

6. A mud pressure sensor according to claim 1, characterized in that the strain gauge (5) is glued to the bottom of the receiving chamber (8).

7. A mud pressure sensor according to claim 1, characterized in that the flow guiding opening (7) is arranged in the centre of the bottom of the strain body (6).

8. A mud pressure sensor according to claim 1, characterized in that the housing is screwed to the strain body (6).