CN203132758U

CN203132758U - Pressure gage

Info

Publication number: CN203132758U
Application number: CN 201320092530
Authority: CN
Inventors: 张筱敏
Original assignee: WENLING HAODALI METER FACTORY
Current assignee: WENLING HAODALI METER FACTORY
Priority date: 2013-02-28
Filing date: 2013-02-28
Publication date: 2013-08-14
Anticipated expiration: 2023-02-28

Abstract

The utility model provides a pressure gage, and belongs to the technical field of a measuring tool. The pressure instrument solves problems that an existing pressure gage is low in measuring precision and unreasonable in structure design. The pressure gage comprises a gage housing, a dial, and a rotating shaft disposed on a middle position of the dial. A pointer is disposed on the rotating shaft. A base is fixed on the dial. A bourdon tube is disposed on the base, and an end of the bourdon tube is communicated with an inlet which is disposed on an outer side of the gage housing. The other end of the bourdon tube is connected with the rotating shaft in a transmission manner through a transmission structure. A torsional spring used to reset the rotating shaft after the rotating shaft rotates is disposed between the rotating shaft and the dial. A pointer spacing structure is disposed on the dial. The pressure gage is advantaged by reasonable structure design, high measuring precision, etc.

Description

A kind of tensimeter

Technical field

Utility model relates to a kind of surveying instrument, particularly a kind of tensimeter.

Background technology

When in petroleum pipe line, carrying out the conveying of liquid or gas, need be in pipeline the setting pressure instrument, be used for detecting at any time the pressure of pipeline medium.Existing manometer can be divided into two big classes substantially: a class is traditional electromechanical pressure instrument, and another kind of is digital manometer.The electromechanical pressure instrument is the Passive Shape Control device, and namely dispense with outer connecting power gets final product work, has cheap, convenient for installation and maintenance advantage.Common electromechanical pressure instrument is because unreasonable its accuracy of detection that causes of its structural design is lower, and digital manometer needs external power supply to work, and is not suitable for being used in pipeline and carries.But prior mechanical tensimeter no maximum and lower limit can not accurately be measured atmospheric pressure value.Security incident takes place in the hyperbar value in the measuring channel easily immediately when air pressure surpasses the hyperbar value of pipeline.

Summary of the invention

The purpose of this utility model is to have the problems referred to above at existing technology, has proposed a kind of measuring accuracy height, has had the tensimeter of the upper limit and lower limit.

The purpose of this utility model can realize by following technical proposal:

A kind of tensimeter, comprise watchcase and index dial, the medium position of described index dial is equipped with rotating shaft, be arranged with pointer in the described rotating shaft, also has bearing on the described index dial, described bearing is provided with bourdon tube, it is characterized in that, one end of described bourdon tube is communicated with the import that is positioned at the watchcase outside, the other end of described bourdon tube is in transmission connection by a drive mechanism and rotating shaft, can make its torsion spring that resets being provided with between rotating shaft and the index dial after rotating shaft is rotated, described index dial is provided with the pointer position limiting structure.

In above-mentioned tensimeter, described drive mechanism comprises the column that is vertical on the index dial and the rotor that is set on this column, the gear that has setting coaxial with it in the described rotating shaft, one end of described rotor and above-mentioned bourdon tube are hinged, have the grinding tooth that is meshed with said gear on the other end of described rotor.

In above-mentioned tensimeter, described position limiting structure comprises for limit pointer and breaks away from the lower limit part of minimum scale and be used for the upper limit spare that limit pointer breaks away from maximum scale, described lower limit part is positioned at a side that has pointer on the index dial, and described upper limit spare is positioned at a side that has bearing on the index dial.

In above-mentioned tensimeter, described lower limit part is column.

In above-mentioned tensimeter, described upper limit spare in the form of sheets.

Tensimeter is connected on the pipeline that band measures, opens valve, gas enters in the bourdon tube from import, and the bourdon tube generation deformation that is stressed drives the rotation of rotating shaft by drive mechanism, and pointer rotates along index dial, can read force value immediately; After the air pressure in the bourdon tube disappeared, torsion spring drove the rotating shaft counter-rotating and resets, and pointer resets.

Compared with prior art, this tensimeter has the following advantages:

Reasonable in design, simple to operate, measuring accuracy is high, can read force value immediately, controls the working condition of pipeline at any time; The range that pointer shows on can the deviation scale dish plays a protective role to pointer; The long service life of each parts, thus serviceable life of this manometer prolonged.

Description of drawings

Fig. 1 is the structural representation of a kind of preferred embodiment of providing of the utility model.

Among the figure, 1, watchcase; 2, index dial; 3, rotating shaft; 4, pointer; 5, bearing; 6, bourdon tube; 7, import; 8, column; 9, rotor; 10, lower limit part; 11, upper limit spare.

Embodiment

Below be specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.

Tensimeter as shown in Figure 1, it mainly comprises watchcase 1 and index dial 2, and the medium position of index dial 2 is equipped with rotating shaft 3, is arranged with pointer 4 in the rotating shaft 3, also has bearing 5 on the index dial 2, and bearing 5 is provided with bourdon tube 6.

In the present embodiment, one end of this bourdon tube 6 is communicated with the import 7 that is positioned at watchcase 1 outside, the other end of bourdon tube 6 is in transmission connection by a drive mechanism and rotating shaft 3, can make its torsion spring that resets being provided with between rotating shaft 3 and the index dial 2 after rotating shaft 3 is rotated, index dial 2 is provided with pointer 4 position limiting structures.

Concrete, as shown in Figure 1, this drive mechanism comprises the column 8 that is vertical on the index dial 2 and the rotor 9 that is set on this column 8, the gear that has setting coaxial with it in the rotating shaft 3, one end and the bourdon tube 6 of rotor 9 are hinged, have the grinding tooth that is meshed with gear on the other end of rotor 9.

As shown in Figure 1, this position limiting structure comprises for limit pointer 4 and breaks away from the lower limit part 10 of minimum scale and be used for the upper limit spare 11 that limit pointer 4 breaks away from maximum scale, lower limit part 10 is positioned at a side that has pointer 4 on the index dial 2, and upper limit spare 11 is positioned at a side that has bearing 5 on the index dial 2.Concrete, as shown in Figure 1, lower limit part 10 is column; Upper limit spare 11 in the form of sheets.

When work, tensimeter is connected on the pipeline of band measurement, open valve, gas enters in the bourdon tube 6 from import 7, and the bourdon tube 6 generation deformation that is stressed drives the rotation of rotating shaft 3 by drive mechanism, pointer 4 rotates along index dial 2, can read force value immediately; After the air pressure in the bourdon tube 6 disappeared, torsion spring drove rotating shaft 3 counter-rotatings and resets, and pointer 4 resets.

This manometric reasonable in design, simple to operate, measuring accuracy is high, can read force value immediately, controls the working condition of pipeline at any time; The range that pointer 4 shows on can deviation scale dish 2 plays a protective role to pointer 4; The long service life of each parts, thus serviceable life of this manometer prolonged.

Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.

Although this paper has used terms such as watchcase 1, index dial 2, rotating shaft 3, pointer 4, bearing 5, bourdon tube 6, import 7, column 8, rotor 9, lower limit part 10, upper limit spare 11 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.

Claims

1. tensimeter, comprise watchcase (1) and index dial (2), the medium position of described index dial (2) is equipped with rotating shaft (3), be arranged with pointer (4) in the described rotating shaft (3), also has bearing (5) on the described index dial (2), described bearing (5) is provided with bourdon tube (6), it is characterized in that, one end of described bourdon tube (6) is communicated with the import (7) that is positioned at watchcase (1) outside, the other end of described bourdon tube (6) is in transmission connection by a drive mechanism and rotating shaft (3), can make its torsion spring that resets being provided with between rotating shaft (3) and the index dial (2) after rotating shaft (3) is rotated, described index dial (2) is provided with pointer (4) position limiting structure.

2. a kind of tensimeter according to claim 1, it is characterized in that, described drive mechanism comprises the column (8) that is vertical on the index dial (2) and is set in rotor (9) on this column (8), the gear that has setting coaxial with it in the described rotating shaft (3), one end of described rotor (9) and above-mentioned bourdon tube (6) are hinged, have the grinding tooth that is meshed with said gear on the other end of described rotor (9).

3. a kind of tensimeter according to claim 1 and 2, it is characterized in that, described position limiting structure comprises for limit pointer (4) and breaks away from the lower limit part (10) of minimum scale and be used for the upper limit spare (11) that limit pointer (4) breaks away from maximum scale, described lower limit part (10) is positioned at a side that has pointer (4) on the index dial (2), and described upper limit spare (11) is positioned at a side that has bearing (5) on the index dial (2).

4. a kind of tensimeter according to claim 3 is characterized in that, described lower limit part (10) is column.

5. a kind of tensimeter according to claim 3 is characterized in that, described upper limit spare (11) in the form of sheets.