CN220792484U - Pressure transmitter heat preservation device - Google Patents

Abstract

The utility model discloses a pressure transmitter heat preservation device which is sleeved on a pressure transmitter body to reduce heat transfer, wherein the pressure transmitter body comprises a gauge outfit and a pipe part, the section size of the pipe part is smaller than that of the gauge outfit, the pressure transmitter comprises a soft heat preservation sleeve covered on the gauge outfit, the heat preservation sleeve is provided with an extensible and expandable sleeve opening, and the sleeve opening is sleeved on the surface of the pipe part and is limited and fixed through a collar ring arranged on the sleeve opening; the thermal insulation sleeve is also provided with an opening, the opening is provided with a sleeve, the sleeve is of a pipe structure and is provided with an inner port and an outer port, the inner port is sleeved outside the dial plate of the gauge outfit, and a window is arranged in the outer port to be closed.

Description

Pressure transmitter heat preservation device

Technical Field

The utility model belongs to the technical field of heat preservation of pipeline pressure equipment, and particularly relates to a heat preservation device of a pressure transmitter.

Background

A pressure transducer is a device that converts pressure into a pneumatic or electric signal for control and remote transmission. The sensor can convert physical pressure parameters such as gas, liquid and the like sensed by the load cell sensor into standard electric signals so as to supply secondary instruments such as an indication alarm instrument, a recorder, a regulator and the like to carry out measurement, indication and process adjustment. The principle of the pressure transmitter for transmitting the pressure signal to the electronic equipment and displaying the pressure on the computer is as follows: the mechanical signal of the pressure of water pressure is converted into current, and the pressure of the electronic signal and the voltage or the current are in linear relation, and are generally in proportional relation. The voltage or current output by the transmitter increases along with the pressure increase, so that two pressures of a measured medium of the pressure transmitter with the relation between the pressure and the voltage or current are obtained, the two pressures are led into a high pressure chamber and a low pressure chamber, the pressure of the low pressure chamber adopts atmospheric pressure or vacuum, the pressure of the low pressure chamber acts on isolation diaphragms at two sides of a delta element (namely a sensitive element), and the pressure is transmitted to two sides of the measurement diaphragm through the isolation diaphragm and filling liquid in the element.

In the existing oil gas pipeline system, a pressure transmitter is often used for detecting the pressure in a pipe or a valve, and because the field station or the pipeline of the oil gas pipeline system is arranged outdoors and no shielding or protecting structure is arranged, the requirements on weather resistance and temperature resistance of the pressure transmitter are high, and if the temperature change causes errors in detection, the safety operation of the whole pipeline equipment is affected. Therefore, the existing pressure transmitter has a larger temperature resistant range and is suitable for outdoor setting, but when in actual use, although the pressure transmitter can be kept stable in a larger temperature range, the problem of error in measurement of the pressure transmitter due to hydrate blockage can occur in a low-temperature environment. Namely, the pressure transmitter does not have a fault at the temperature, but the sampled material has state change due to low temperature when entering the interior, so that the detection precision of the pressure transmitter is affected.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides the heat preservation device for the pressure transmitter, which is applicable to pressure transmitters of different types, achieves a heat preservation effect outside the pressure transmitter through a cover, and has lower cost and better adaptability due to the adoption of soft materials in a large area.

The technical scheme adopted by the utility model is as follows:

in a first aspect, the present utility model provides a pressure transmitter thermal insulation device, sleeved on a pressure transmitter body to reduce heat transfer, the pressure transmitter body including a gauge outfit and a pipe part, the pipe part having a cross-sectional dimension smaller than that of the gauge outfit, the pressure transmitter comprising a soft thermal insulation sleeve covered on the gauge outfit, the thermal insulation sleeve having an extendable and expandable cuff, the cuff being sleeved on a surface of the pipe part and being restrained and fixed by a collar provided thereon;

the thermal insulation sleeve is also provided with an opening, the opening is provided with a sleeve, the sleeve is of a pipe structure and is provided with an inner port and an outer port, the inner port is sleeved outside the dial plate of the gauge outfit, and a window is arranged in the outer port to be closed.

With reference to the first aspect, the utility model provides a first implementation manner of the first aspect, the sleeve comprises a barrel body, an outer flaring and an inner opening, the barrel body is of a hard structure and has a uniform cross-sectional dimension along the axis direction, the cross section of the outer flaring along the axis direction is gradually increased, a flange is arranged on the surface of a port of the outer flaring, and the window is embedded in the outer flaring and is blocked by the flange.

With reference to the first implementation manner of the first aspect, the present utility model provides a second implementation manner of the first aspect, wherein the inner port is of a rubber structure, and is sleeved outside the dial of the gauge outfit through expansion of the inner port.

With reference to the first implementation manner of the first aspect, the present utility model provides a third implementation manner of the first aspect, where the window includes at least two layers of lenses, and a low-pressure area is between the lenses.

The low pressure region is a negative pressure vacuum state in which the air pressure value in the region is lower than the normal atmospheric pressure and is close to the middle layer of the double-layer heat insulation structure of the common heat insulation cup, and the heat conduction efficiency can be reduced by reducing the air quantity in the region, but the high vacuum degree has high requirements on the structure, the materials and the assembly process, so the limited low pressure region can reduce the heat conduction efficiency to a certain extent.

With reference to the third implementation manner of the first aspect, the present utility model provides a fourth implementation manner of the first aspect, where the window includes a convex lens and a plane mirror, and the convex lens is located on an outer side.

With reference to the first embodiment of the first aspect, the present utility model provides a fifth embodiment of the first aspect, wherein the sleeve has a portion protruding from an opening end surface of the insulation sleeve, the portion is provided with an electric heating controller, and the insulation sleeve is internally provided with an electric heating wire connected with the electric heating controller.

With reference to the fifth embodiment of the first aspect, the present utility model provides the sixth embodiment of the first aspect, wherein the power is supplied through a wire disposed outside the electric heating controller and connected to an external power supply.

With reference to the fifth implementation manner of the first aspect, the present utility model provides a seventh implementation manner of the first aspect, wherein the electric heating controller has a built-in power source, and is charged by being connected to an external power source through an electric wire disposed outside the electric heating controller.

With reference to the first embodiment of the first aspect, the present utility model provides an eighth embodiment of the first aspect, wherein the insulation sleeve includes a polyurethane layer and an external waterproof layer.

The beneficial effects of the utility model are as follows:

(1) The soft heat-insulating sleeve is arranged as a main material, a heat-insulating soft material with lower cost can be adopted, a better heat-insulating effect can be formed, meanwhile, the soft heat-insulating sleeve can be sleeved outside various pressure transmitters by arranging proper sizes, has higher applicability, can be in sealing connection with a pipe part after the pressure transmitter is sleeved by the soft heat-insulating sleeve, and is convenient to arrange and install by reinforcing the sealing effect and the fixing effect through the collar;

(2) According to the utility model, through the sleeve structure, the reading of the whole pressure transmitter can be checked through the arranged window, and the sleeve is sleeved on the gauge outfit of the pressure transmitter to form fixation, so that a supporting effect is provided for the whole insulation sleeve, a certain limiting and fixing effect can be provided for the insulation sleeve in extreme weather, and the problems of material tearing, cracking and the like due to the fact that the larger external volume only depends on the fixing and limiting effect of the collar are avoided; meanwhile, a low-pressure space is formed in the middle of the double-layer lens structure, so that the heat transfer rate is further reduced, and the reading on the inner meter head can be amplified to a certain extent through the convex lens structure arranged outside, so that a worker can see the reading more easily;

(3) The utility model can realize the effect of active heating and heat preservation by arranging the electric heating wire and the electric heating controller at the place with external power supply condition in part of the natural gas field station or without external power supply condition on the outdoor pipeline by a battery or solar power supply mode arranged on the outdoor pipeline, and can keep the internal temperature of the pressure transmitter above zero all the time by an active heating mode when meeting some extremely low temperature weather.

Drawings

FIG. 1 is a side view of an embodiment of the present utility model after the entire thermal insulation device is installed;

FIG. 2 is a front view of the whole insulation device according to the embodiment of the present utility model after being sleeved;

FIG. 3 is an isometric view of the entire insulation unit of the present utility model after it has been installed;

FIG. 4 is a plan view of an insulating device of an embodiment of the present utility model after being cut along a midline to expose an internal pressure transducer;

FIG. 5 is an isometric view of an insulating device of an embodiment of the present utility model after being cut along a midline to expose an internal pressure transducer.

In the figure: 1-heat preservation sleeve, 2-beam mouth ring, 3-sleeve, 4-electric heating controller, 5-window, 501-convex lens, 502-plane mirror, 6-electric wire, 7-pressure transmitter body, 8-electric heating wire.

Detailed Description

The utility model is further illustrated by the following description of specific embodiments in conjunction with the accompanying drawings.

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present application, it should be noted that, if the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship that a product of the application conventionally puts in use, it is merely for convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like in the description of the present application, if any, are used for distinguishing between the descriptions and not necessarily for indicating or implying a relative importance.

Furthermore, the terms "horizontal," "vertical," and the like in the description of the present application, if any, do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

Example 1:

the embodiment discloses a heat preservation device of pressure transmitter, and the pressure transmitter that relates to in this embodiment is the pressure transmitter of the digital dial plate of mainly using on the oil gas pipeline, and mainly sets up and carries out pressure detection in oil gas delivery station, carries out data transmission through cable and external equipment connection.

Referring to fig. 5, the pressure transmitter body 7 includes a cylindrical gauge head, and a lower thin tube portion, where the tube portion is connected to the detection end and is used to obtain an oil gas pressure value, and then the gauge head converts the pressure value into an electrical signal and passes through the electrical signal, and meanwhile, one side of the gauge head is the dial. Because the pressure transmitter can cause measuring error because of the hydrate blocks up in outdoor low temperature weather, current heat preservation measure adopts the tinfoil paper to wrap up the heat preservation, but this kind of mode is mostly the temporary handling mode of station or maintainer, and heat preservation effect is poor, and the change frequency is higher. The heat preservation device provided in the embodiment is simple and convenient to install, high in stability and low in maintenance cost and use cost.

Referring to fig. 1-3, the heat preservation device comprises a heat preservation sleeve 1, wherein the heat preservation sleeve 1 adopts a conical structure made of soft materials mainly made of polyurethane, a sleeve opening is formed at the end part of the conical structure, and is provided with a rubber shrinkage or elastic-band-like structure, so that the heat preservation sleeve 1 can be expanded to the maximum section size, and the whole pressure transmitter can enter and be sleeved on the surface of a pipe part. The thermal insulation sleeve 1 can not be extended, but can be folded and placed when being carried, and a plurality of thermal insulation sleeves 1 can be arranged in a single package, so that the installation of a plurality of devices is satisfied.

The heat insulation sleeve 1 comprises a polyurethane layer and an external waterproof layer, the external waterproof layer is made of waterproof cloth materials, the polyurethane layer is covered, the heat insulation sleeve not only can be waterproof, but also has certain scratch-resistant characteristics, and the polyurethane layer is protected.

Further, the collar 2 is provided outside the tube portion to improve the sealing effect after the collar is fitted over the tube portion. The collar 2 can be arranged in various ways, such as a rubber ring structure with larger elasticity, the sleeve opening is clung to the surface of the pipe part through larger elastic contraction force, or a foam adhesive tape is wound around the collar, so that the collar can be sealed and stuck, and meanwhile, the foam adhesive tape has certain heat insulation performance.

In this embodiment, the foam adhesive tape with equal thickness is used as the raw material of the collar 2 structure, when in installation or maintenance, a worker can carry a plurality of folded heat preservation sleeves 1 and a plurality of circles of foam adhesive tapes, when in installation, the sleeve opening of the heat preservation sleeve 1 is propped up and then sleeved on the pressure transmitter, then the sleeve opening is pulled to the pipe part to be attached, and meanwhile, the foam adhesive tape is wound on the outer surface of the sleeve opening to form the collar 2.

Further, an opening is formed in the main body of the heat insulation sleeve 1, a hard sleeve 3 is arranged at the opening, the sleeve 3 is of a through pipeline structure and is provided with two ports, and the opening of the heat insulation sleeve 1 is sleeved on the outer surface of the sleeve 3 and is fixed through viscose or thermoplastic. Specifically, referring to fig. 4 and 5, the sleeve 3 includes a barrel, an outer flare and an inner port, the barrel being a hard pipe made of a polymer material, and having an equal section in the axial direction. The annular rubber structure is connected to the inner opening, the inner diameter of the rubber structure is communicated with the inner diameter of the cylinder body, but the rubber structure has certain extensibility, and the rubber structure can be suitable for pressure transmitters with different gauge heads, such as the pressure transmitter in fig. 5, and the inner opening of the sleeve 3 is sleeved on the outer surface of the dial plate of the pressure transmitter, so that a certain fixed limiting effect can be provided.

The opening end face of the outer flaring is provided with a ring-shaped flange, a lens arranged in the outer flaring is fixed through the flange, and the lens forms a window 5 structure of the sleeve 3.

The lens includes at least two, referring to fig. 4, and two-layer lens all inlays with the inner wall of outer flaring to be equipped with the sealant in the caulking groove, can form better sealed effect. When the sleeve 3 is manufactured, after the two lenses are fixed, the two lenses penetrate through the inner lenses from the inside and exhaust the middle of the lenses to form a negative pressure state, in order to improve the heat insulation effect, vacuum degree of a vacuum cup level can be formed between the two lenses, and in order to facilitate penetration during setting, the inner lenses are made of resin materials, and after the required vacuum degree is achieved, the penetrating part is treated by sealant.

Specifically, referring to fig. 4, the outer lens is a convex lens 501, and the inner side is a plane mirror 502, the plane mirror 502 mainly has the effects of light transmission and sealing, and the convex lens 501 can diffuse light transmitted from the inside to the outside, so that a certain lens amplifying effect is achieved, and a worker can conveniently check the reading of the pressure transmitter inside from the outside.

Further, the sleeve 3 is provided with a part protruding out of the opening end face of the heat preservation sleeve 1, the part is provided with an electric heating controller 4, an electric heating wire 8 connected with the electric heating controller 4 is arranged inside the heat preservation sleeve 1, and power is supplied through the electric wire 6 arranged outside the electric heating controller 4 and connected with an external power supply. Referring to fig. 1-5, the electric heating controller 4 is a module integrally formed with the sleeve 3, and is shown as a rectangular convex shell, a PCB circuit board is arranged inside, the electric heating controller is connected with an external 220V power supply through a wire, or a battery is arranged inside, the battery is charged regularly, a solar power supply module can be arranged as required, a solar power generation panel with a certain area is arranged beside the electric heating controller, and energy storage can be performed in the daytime. The internal temperature is then monitored by a built-in temperature sensor, which will activate the electrical heating once it has fallen to the set threshold temperature, and after keeping the internal temperature above the set threshold, the thermostatic control mode is activated.

The electric heating wire 8 is a common resistance heating structure directly attached to the inner wall of the insulation sleeve 1, and a plurality of parallel circuits can be arranged in the insulation sleeve 1, so that even if one circuit is damaged, the heating effect can be realized by other electric heating wires 8 connected with the electric heating controller 4.

The utility model is not limited to the alternative embodiments described above, but any person may derive other various forms of products in the light of the present utility model. The above detailed description should not be construed as limiting the scope of the utility model, which is defined in the claims and the description may be used to interpret the claims.

Claims (9)

1. The utility model provides a pressure transmitter heat preservation device, the cover is established and is reduced heat transfer on pressure transmitter body (7), and pressure transmitter body (7) are including gauge outfit and pipe portion, pipe portion cross-section size is less than gauge outfit cross-section size, its characterized in that: the heat-insulating sleeve (1) is covered on the gauge outfit, the heat-insulating sleeve (1) is provided with an extensible and expandable sleeve opening, and the sleeve opening is sleeved on the surface of the pipe part and is limited and fixed through a collar (2) arranged on the surface of the pipe part;

the thermal insulation sleeve (1) is also provided with an opening, the opening is provided with a sleeve (3), the sleeve (3) is of a pipe structure and is provided with an inner port and an outer port, the inner port is sleeved outside a dial plate of the gauge outfit, and a window (5) is arranged in the outer port to be closed.

2. The pressure transmitter thermal insulation apparatus of claim 1, wherein: the sleeve (3) comprises a sleeve body, an outer flaring and an inner opening, wherein the sleeve body is of a hard structure and has equal section sizes along the axial direction, the section of the outer flaring along the axial direction is gradually increased, the surface of a port of the outer flaring is provided with a flange, and the window (5) is embedded in the outer flaring and is blocked by the flange.

3. The pressure transmitter thermal insulation apparatus of claim 2, wherein: the inner port is of a rubber structure and is sleeved outside the dial of the gauge outfit through expansion of the inner port.

4. The pressure transmitter thermal insulation apparatus of claim 2, wherein: the window (5) comprises at least two layers of lenses, and a low-pressure area is arranged between the lenses.

5. The pressure transmitter thermal insulation apparatus of claim 4, wherein: the viewing window (5) comprises a convex lens (501) and a plane mirror (502), and the convex lens (501) is arranged on the outer side.

6. The pressure transmitter thermal insulation apparatus of claim 2, wherein: the sleeve (3) is provided with a part protruding out of the opening end face of the heat preservation sleeve (1), the part is provided with an electric heating controller (4), and the heat preservation sleeve (1) is internally provided with an electric heating wire (8) connected with the electric heating controller (4).

7. The pressure transmitter thermal insulation apparatus of claim 6, wherein: and the electric heating controller (4) is connected with an external power supply through an electric wire (6) arranged outside the electric heating controller to supply power.

8. The pressure transmitter thermal insulation apparatus of claim 6, wherein: the electric heating controller (4) is internally provided with a power supply, and is charged by being connected with an external power supply through an electric wire (6) arranged outside the electric heating controller (4).

9. The pressure transmitter thermal insulation apparatus of claim 2, wherein: the heat preservation sleeve (1) comprises a polyurethane layer and an external waterproof layer.