CN219104234U

CN219104234U - Stress detection probe used in explosion-proof environment

Info

Publication number: CN219104234U
Application number: CN202223125308.8U
Authority: CN
Inventors: 方文平; 李新; 余杭清; 方鼎; 康佳
Original assignee: Hangzhou Jianwei Technology Co ltd
Current assignee: Hangzhou Jianwei Technology Co ltd
Priority date: 2022-11-24
Filing date: 2022-11-24
Publication date: 2023-05-30
Anticipated expiration: 2032-11-24

Abstract

The utility model provides a stress detection probe used in an explosion-proof environment, and belongs to the technical field of stress detection equipment. The stress detection probe solves the problems that an existing stress detection probe is poor in tightness and the like in an explosion-proof environment. The stress detection probe used in the explosion-proof environment comprises a probe, a contact, an insulating pad and an insulating cover, wherein the insulating pad is fixed on a tested part of a workpiece, the probe is fixed on the insulating pad, the contact is in butt joint with the probe and is communicated with the probe, the insulating cover is arranged on the periphery of the probe and the contact, and a closed cavity is formed between the insulating cover and the insulating pad. The utility model has the advantages of good sealing performance and the like.

Description

Stress detection probe used in explosion-proof environment

Technical Field

The utility model belongs to the technical field of stress detection equipment, and particularly relates to a stress detection probe used in an explosion-proof environment.

Background

Under certain conditions, the chemical dangerous goods which can cause combustion and explosion and cause accidents such as personal casualties, property loss and the like are collectively called inflammable and explosive goods. Inflammable and explosive articles include oil, gas, etc.

Because pipeline technology has unique advantages in long-distance transportation of petroleum, natural gas and other mediums, long-distance transportation of petroleum, natural gas and other inflammable and explosive objects is generally carried out by using long-distance oil and gas pipelines. The long oil and gas pipeline belongs to medium-pressure or high-pressure pipeline, the pipeline length is hundreds of thousands to tens of thousands kilometers, and the conveying medium is inflammable and explosive dangerous goods, so that the pipeline has strict requirements on deformation caused by internal and external load changes.

Therefore, the stress strain of the long oil and gas transmission pipeline is accurately and timely detected, so that the deformation degree of the long oil and gas transmission pipeline is in an allowable range, and the long oil and gas transmission pipeline leakage is prevented. The stress detection device is arranged on the periphery of the long oil and gas transmission pipeline and is in an electrified state for a long time.

When oil and gas pipeline once leak, inflammable and explosive articles in the pipeline can be distributed in the space around the leaking part, so that the environment in which the stress detection device is positioned becomes inflammable and explosive environment, namely environment needing explosion prevention, at the moment, the stress detection device is in an electrified state for a long time, and the explosion prevention effect of the existing stress detection probe is poor in the explosion prevention environment.

Therefore, there is a need for a stress detection probe that is well closed to prevent gas explosions due to probe failure.

Disclosure of Invention

The present utility model has been made in view of the above-mentioned problems occurring in the prior art, and it is an object of the present utility model to provide a stress detecting probe for use in an explosion-proof environment.

The aim of the utility model can be achieved by the following technical scheme: the stress detection probe used in the explosion-proof environment is characterized by comprising a probe, a contact, an insulating pad and an insulating cover, wherein the insulating pad is fixed on a measured part of a workpiece, the probe is fixed on the insulating pad, the contact is in butt joint with the probe and is communicated with the probe, the insulating cover is covered on the periphery of the probe and the contact, and a closed cavity is formed between the insulating cover and the insulating pad.

The working principle of the utility model is as follows: when stress detection, the outside of the detecting head is provided with an insulating cover to seal the probe, and meanwhile, an insulating pad is arranged between the probe and the workpiece, so that under the condition that the probe is always electrified, electric sparks do not leak out of the insulating cover even if a circuit fails, and when the condition of inflammable and explosive gas leakage occurs, the condition of explosion is avoided.

In the stress detection probe for the explosion-proof environment, the insulating pad is made of PVC. In the stress detection probe for the explosion-proof environment, a colloid layer is arranged between the insulating pad and the workpiece.

In the stress detection probe for the explosion-proof environment, a colloid layer is arranged between the probe and the insulating pad.

In the stress detection probe for the explosion-proof environment, the colloid layer is glass cement. In the stress detection probe for the explosion-proof environment, a sealing colloid is arranged between the insulating pad and the insulating cover.

In the stress detection probe for the explosion-proof environment, the contact is provided with the connecting wire, the insulating cover is provided with the wire hole, and the wire hole is used for allowing the connecting wire to pass out of the cavity.

In the stress detection probe for the explosion-proof environment, the wire holes are filled with the sealing colloid.

In the stress detection probe for the explosion-proof environment, the sealing colloid is glass colloid.

Compared with the prior art, the utility model has the advantage of good sealing performance.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic view of the internal structure of the present utility model.

In the figure, 1, a workpiece; 2. a probe; 3. a contact; 4. an insulating pad; 5. an insulating cover; 6. a chamber; 7. a wire hole; 8. a connecting wire; 9. sealing colloid; 10. and a colloid layer.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1-2, the stress detection probe for an explosion-proof environment comprises a probe 2, a contact 3, an insulating pad 4 and an insulating cover 5, wherein the insulating pad 4 is fixed on a tested part of a workpiece 1, the probe 2 is fixed on the insulating pad 4, the contact 3 is in butt joint with the probe 2 and is communicated with the probe 2, the insulating cover 5 is covered on the periphery of the probe 2 and the contact 3, and a closed cavity 6 is formed between the insulating cover 5 and the insulating pad 4.

Further, the insulating pad 4 is made of PVC, and the PVC material has good insulativity, is simple and convenient to obtain materials, and saves cost.

Further, a glue layer 10 is provided between the insulating pad 4 and the workpiece 1.

Further, a colloid layer 10 is arranged between the probe 2 and the insulating pad 4, the insulating pad 4 separates the probe 2 from the workpiece 1, the tightness of the inside of the insulating cover 5 is enhanced, and the colloid layer 10 ensures that the probe 2, the workpiece 1 and the colloid layer are firmly fixed.

Further, the gel layer 10 is glass gel.

Further, a sealing colloid 9 is arranged between the insulating pad 4 and the insulating cover 5, and the sealing colloid 9 is used for filling gaps, so that the probe 2 is completely isolated from the outside, and the gas cannot enter the probe 2 when leaking.

Further, the contact 3 has a connecting wire 8, the insulating cover 5 is provided with a wire hole 7, the wire hole 7 is used for the connecting wire 8 to penetrate from the cavity 6, the connecting wire 8 is used for connecting other working modules, and meanwhile, the wire hole 7 is provided with a sealing colloid 9 to form a closed cavity 6.

Further, the wire hole 7 is filled with a sealing compound 9. Further, the sealing colloid 9 is glass cement.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Although a number of terms are used more herein, the use of other terms is not precluded. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.

Claims

1. A stress detection probe used in an explosion-proof environment is characterized by comprising a probe (2), a contact (3), an insulating pad (4) and an insulating cover (5), wherein the insulating pad (4) is fixed on a tested part of a workpiece (1), the probe (2) is fixed on the insulating pad (4), the contact (3) is in butt joint with the probe (2) and is communicated with the probe, the insulating cover (5) is covered on the periphery of the probe (2) and the contact (3), and a closed cavity (6) is formed between the insulating cover (5) and the insulating pad (4).

2. A stress testing probe for use in an explosion-proof environment according to claim 1, wherein said insulating pad (4) is made of PVC.

3. A stress testing probe for use in an explosion-proof environment according to claim 1, wherein a gel layer (10) is provided between the insulating pad (4) and the workpiece (1).

4. A stress testing probe for use in an explosion-proof environment according to claim 1, wherein a gel layer (10) is provided between the probe (2) and the insulating pad (4).

5. A stress testing probe for use in an explosion-proof environment according to claim 3, wherein said gel layer (10) is glass cement.

6. A stress detection probe for use in an explosion-proof environment according to claim 1, wherein a sealing gel (9) is provided between the insulating pad (4) and the insulating cover (5).

7. A stress detection probe for use in an explosion-proof environment according to claim 1, wherein the contact (3) has a connection wire (8), the insulating cover (5) is provided with a wire hole (7), and the wire hole (7) is used for allowing the connection wire (8) to pass out of the chamber (6).

8. A stress testing probe for use in an explosion-proof environment according to claim 7, wherein the wire hole (7) is filled with a sealing gel (9).

9. A stress testing probe for use in an explosion-proof environment according to claim 8, wherein said sealant (9) is glass cement.