CN2473608Y

CN2473608Y - Anti-explosion safety pressure gauge

Info

Publication number: CN2473608Y
Application number: CN 01237604
Authority: CN
Inventors: 周建明; 陈祖岳
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-04-26
Filing date: 2001-04-26
Publication date: 2002-01-23
Anticipated expiration: 2011-04-26

Abstract

The utility model belongs to a pressure meter especially to a pressure meter which is filled with liquid in the meter shell and has the functions of anti-leakage and anti-explosion. The main technical scheme lies in that a meter core, a meter dial, a finger and a spring tube are provided in the cavity enclosed by the meter shell and the transparent meter window on the front face of the meter shell. The utility model is characterized in that an opening hole is arranged on the back of the meter shell. An anti-explosion cover is installed in the opening hole. The opening hole is provided with a film air sac which is installed on the inner side of the anti-explosion cover through the cooperation between the ring convex on the inner side of the anti-explosion cover and the opening hole on the meter shell. Personal injury accidents can be avoided and the measuring accuracy of the pressure meter can be raised by using the device.

Description

Anti-explosion safety type tensimeter

The utility model belongs to a kind of tensimeter, refers in particular to a kind of tensimeter with anti-leak and explosion prevention function at the watchcase internal-filling liquid.

In the prior art, diameter be φ 100, φ 150mm, watchcase internal-filling liquid with watchcase be hermetic protected against splashing water tensimeter, be mostly on the basis of ordinarily manometer, common watchcase repacking is designed to hermetically-sealed construction, its movement still adopts the movement of ordinarily manometer, joint is the monoblock cast structure, joint adopts screw fastening with being connected of watchcase, the special-shaped rubber blanket is used in the sealing of joint and watchcase, and be coated with fluid sealant, there is one to be used for liquid is circulated into filling hole in the watchcase at the watchcase top, after liquid pours into watchcase, seals with sealing-plug.This tensimeter does not have explosion-proof pressure relief.When flexible member breaks, or the tensimeter pressure guiding system because sealing-plug can not be discharged pressure rapidly, causes the table window to break when leaking, and the accident that operating personnel are damaged happens occasionally; Its two, in existing tensimeter, the liquid of filling has caused chronic leakage to a certain degree between screw, joint and watchcase in the watchcase, not only makes this tensimeter lose original antivibration function, but also can cause pollution to a certain degree; Its three, in existing tensimeter, when operating ambient temperature changed, pressure and atmospheric pressure imbalance in the watchcase caused bourdon tube generation microdisplacement, amplified pointer generation angular displacement, the distortion of build-up of pressure meter accuracy by movement; Its four, in existing tensimeter, watchcase and joint are cast member, the manufacturing process complexity of watchcase, cost height, as use stamping parts instead, and with 3 screw retention, then the twisting strength of watchcase is not enough, makes the distortion of tensimeter indication operating accuracy; Joint adopts foundry goods, and its material is loose, and defective such as pore is arranged unavoidably, be mingled with is leaked easily, and security is also relatively poor.

The purpose of this utility model is to seek a kind of anti-explosion safety type tensimeter of rational in infrastructure, easily manufactured, good airproof performance.

Its main technical schemes is by the watchcase and the cavity in the transparent table window besieged city that is positioned at the watchcase front watch core, dial plate, pointer and bourdon tube to be installed, to be it is characterized in that at the back side of watchcase perforate being set, Explosion-proof cap is installed in perforate;

At tapping the film air bag is installed, the perforate on the annular projection that this film air bag utilizes the Explosion-proof cap inboard and the watchcase cooperate the inboard that is installed on Explosion-proof cap; Nipple is set in cavity, in the joint portion of nipple and watchcase the O RunddichtringO is set, passage is arranged in nipple, the O RunddichtringO is embedded in the groove that is opened on the nipple;

Nipple is set in cavity, connects to take in the outer end of nipple and chew, take over passage and the interior channel connection of nipple in chewing; The joint portion of chewing with nipple in adapter is provided with packing washer;

Nipple and the sealing of taking between chewing also can be adopted this form: between nipple and adapter are chewed the sealed tube that there is passage inside is set, the two ends of sealed tube are respectively sphere, this sphere is chewed inclined-plane fitted seal corresponding to separately passage place with nipple and adapter respectively, passage 28 is communicated with

passage

24,25, and nipple and adapter are chewed and interconnected;

Nipple and the another kind of seal form of taking between chewing are in the outer end of nipple Rotary-table to be set, and one section excessive portion with the Rotary-table fitted seal is arranged at the passage place that adapter is chewed, and each passage is interconnected, and nipple is chewed with adapter and is connected;

Table window utilization table lid is installed on the front of watchcase, in the joint portion of table window and watchcase the window pad is set, and the section configuration of this window pad is L shaped; Side at watchcase is provided with sealing-plug.

The utility model has the advantages that owing to be provided with Explosion-proof cap at the watchcase back side, when tensimeter pressure guiding system generation leakage phenomenon, Explosion-proof cap can eject from tensimeter back immediately, pressure in the pressure guiding system is released, avoided the interior pressure of pressure guiding system to manometric positive area scattering, the operator has been caused the accident of personal injury; Secondly, owing to the film air bag has been installed at the back side of watchcase, when above-mentioned manometric environment temperature changes, pressure and atmospheric pressure imbalance in the watchcase, the pressure gage spring tube pipe end is subjected to displacement, when causing the tensimeter index error, the film air bag can change shape thereupon, make pressure and atmospheric pressure balance in the watchcase,, play the effect of automatic compensation to guarantee manometric measuring accuracy; The 3rd, utilize the groove that is arranged on the nipple that O-ring seal has been installed in the joint portion of nipple and watchcase, and the screw thread that the utilization adapter is chewed is with nipple, O RunddichtringO and watchcase compression seal, changed the leakage-proof structure that traditional rubber blanket adds fluid sealant, guaranteed that the filling liquid in the above-mentioned tensimeter watchcase does not leak from the joint portion of watchcase and nipple; The 4th, be provided with hermetically-sealed construction at nipple with taking over the joint portion chew, improved sealing effectiveness, its hermetically-sealed construction can be the O-ring seal of simple in structure a, good sealing effect; Also can be and take over the sealed tube sealing that dribbling face in end is set between chewing at nipple, utilize nipple and the power that screws of taking over the screw thread pair of chewing, sealed tube, nipple, adapter are chewed compress, and make it produce plastic yield, realize sealing; Can also on nipple, make a Rotary-table, utilize nipple and the power that screws of taking over the screw thread pair generation of chewing, make the conical surface of Rotary-table and take over the excessive portion wringing fit of chewing on the passage, make it produce plastic yield, reach the purpose of sealing.

Fig. 1 is a planimetric map of the present utility model.

Fig. 2 is the M-M view among Fig. 1.

Fig. 3 is the partial enlarged drawing of A among Fig. 2.

Fig. 4 is the partial enlarged drawing of C among Fig. 2.

Fig. 5 is the partial enlarged drawing of B among Fig. 2.

Fig. 6 is the another kind of structural drawing of M-M view among Fig. 1.

Fig. 7 is the 3rd a kind of structural drawing of M-M view among Fig. 1.

Fig. 8 is the partial enlarged drawing of D among Fig. 2.

Fig. 9 is the partial enlarged drawing of E among Fig. 6.

Figure 10 is the partial enlarged drawing of F among Fig. 7.

As shown in the figure:

By the watchcase 1 and the cavity 23 in transparent table window 5 besieged cities that are positioned at watchcase 1 front watch core 15 is being installed, dial plate 3, pointer 4 and bourdon tube 12, at the back side of watchcase 1 perforate 32 is set, Explosion-proof cap 13 is installed in perforate 32, perforate 32 on the annular projection 31 that film air bag 14 utilizes Explosion-proof cap 13 inboards and the watchcase 1 cooperate the inboard that is installed on Explosion-proof cap 13, among Fig. 26,7 are respectively movement screw and dial screw, nipple 16 is set in cavity 23, joint portion at nipple 16 and watchcase 1 is provided with 0 RunddichtringO 17, to improve the sealing property at this position, passage 24 is arranged in nipple 16, O RunddichtringO 17 is embedded in the groove 33 that is opened on the nipple 16, connect adapter in the outer end of nipple 16 and chew 11, the passage 25 that adapter is chewed in 11 is communicated with passage 24 in the nipple 16, and adapter chew 11 and the joint portion of nipple 16 packing washer 10 is set.

Also can and take over and chew 20 the sealed tube 19 that there is passage 28 inside is set at nipple 18, the two ends of sealing pipe 19 are respectively sphere 27, sphere 27 is respectively with nipple 18 and take over inclined-plane 26 fitted seal chew on 20 corresponding to separately

passage

24,25 places, passage 28 is communicated with

passage

24,25, and nipple 18 is chewed 20 with adapter and interconnected.

One Rotary-table 29 can also be set in the outer end of nipple 21, and chewing 22 passage 25 places in adapter has one section excessive portion 30 with Rotary-table 29 fitted seal, and passage 24 is communicated with 25, and nipple 21 is chewed 22 with adapter and is connected.

Table window 5 utilization tables lid 8 is installed on the front of watchcase 1, joint portion at table window 5 and watchcase 1 is provided with window pad 9, the section configuration of this window pad 9 is L shaped, during installation, the part that watchcase 1 end is outwards routed up is pressed in one side of window pad 9 on the table window 5, the another side of window pad 5 is the inwall that free state wraps in watchcase 1, when the extruding force of 1 pair of window pad 9 of watchcase is excessive, but one side free shrink that is free state, played certain regulating and compensating role, avoid damaging by pressure and leaking, be provided for stopping up the sealing-plug 2 in filling hole in the side of watchcase 1.

Claims

1, anti-explosion safety type tensimeter, by the cavity (23) in watchcase (1) transparent table window (5) besieged city positive watch core (15), dial plate (3), pointer (4) and bourdon tube (12) are being installed with being positioned at watchcase (1), it is characterized in that perforate (32) being set, Explosion-proof cap (13) is installed in perforate (32) at the back side of watchcase (1).

2, tensimeter according to claim 1 is characterized in that locating to be equipped with film air bag (14) in perforate (32).

3, tensimeter according to claim 1 and 2 is characterized in that film air bag (14) utilizes the inboard that is installed on Explosion-proof cap (13) that cooperates of perforate (32) on the inboard annular projection (31) of Explosion-proof cap (13) and the watchcase (1).

4, tensimeter according to claim 1, it is characterized in that in cavity (23), being provided with nipple (16), joint portion at nipple (16) and watchcase (1) is provided with O RunddichtringO (17), passage (24) is arranged in nipple (16), and O RunddichtringO (17) is embedded in the groove (33) that is opened on the nipple (16).

5, tensimeter according to claim 1 is characterized in that being provided with nipple (16) in cavity (23), connect in the outer end of nipple (16) to take over to chew (11), takes over the interior passage (24) of passage (25) of chewing in (11) and nipple (16) and is communicated with.

6, tensimeter according to claim 1 or 5, the joint portion that it is characterized in that chewing in adapter (11) and nipple (16) is provided with packing washer (10).

7, tensimeter according to claim 1 or 5, it is characterized in that chewing and between (20) inside is set the sealed tube of passage (28) (19) is arranged in nipple (18) and adapter, the two ends of sealing pipe (19) are respectively sphere (27), sphere (27) is chewed (20) with nipple (18) and adapter respectively and is gone up corresponding to passage (24) separately, inclined-plane (26) fitted seal that (25) are located, passage (28) is communicated with passage (24), (25), and nipple (18) is chewed (20) with adapter and interconnected.

8, tensimeter according to claim 1 or 5, the outer end that it is characterized in that nipple (21) is Rotary-table (29), the passage (25) of chewing (22) in adapter is located one section excessive portion (30) with Rotary-table (29) fitted seal, passage (24) is communicated with (25), and nipple (21) is chewed (22) and is connected with adapter.

9, tensimeter according to claim 1 is characterized in that showing window (5) and utilizes table lid (8) to be installed on the front of watchcase (1), in the joint portion of table window (5) and watchcase (1) window pad (9) is set, and the section configuration of this window pad (9) is L shaped.

10, tensimeter according to claim 1 is characterized in that in the side of watchcase (1) sealing-plug (2) being set.