CN201706100U

CN201706100U - Flange connecting sealing device

Info

Publication number: CN201706100U
Application number: CN201020229010XU
Authority: CN
Inventors: 周建辉; 王志明; 侯军; 金耀辉; 朱英波; 祁扬
Original assignee: Xian Railway Transportation and Equipment Co Ltd
Current assignee: CRRC Xian Co Ltd
Priority date: 2010-06-18
Filing date: 2010-06-18
Publication date: 2011-01-12
Anticipated expiration: 2020-06-18

Abstract

The utility model provides a flange connecting sealing device, comprising a flange base and a flange cover, the flange connection sealing device is characterized in that, a channel is disposed on the inner wall of the flange base, the upper end of the channel is communicated with a liquid pumping tube, the lower end of the channel is communicated with a tank. The flange connecting device in the utility model forms a channel on the inner wall of the flange base, the channel lower part is communicated with the gas phase space of the tank, the channel upper part is communicated with the gas phase space of the liquid pumping tube, in this way, the total energy of the gas phase space pressure and the liquid pumping tube pressure tank can keep a balance in the work process, the medium tank is not extruded outside the liquid pumping device by the internal pressure; the sealing gasket is fixed inside the groove of the flange cover via a gland, a T-shaped groove is provided on the flange cover, the gland clings to the flange cover via a fastening piece, effectively preventing the sealing gasket from falling off.

Description

The joint seal of flanges device

Technical field

The utility model relates to a kind of joint seal of flanges device, relates in particular to a kind of flange connecting apparatus.

Background technique

The following several modes of existing joint seal of flanges:

1, at the pumping pipe top a pair of convex surface or male and female flange are set, realize sealing with bolton.

2, on pumping pipe top blind flange, flange seat are set, flange seat upper edge Flange Plane substantially horizontal is provided with lug, realize sealing by bolt flange lid and flange seat, an end of blind flange cooperates with the flange seat bearing pin, and blind flange is to be that running shaft rotarily opens by this bearing pin.

More than two kinds of joint seal of flanges devices all have following shortcoming:

1, flange is fastening by the bolt manual operation, has the poorly sealed hidden danger that may cause leakage.Flow container in use owing to reasons such as temperature rising media expansion, causes the tank body internal pressure to be higher than barometric pressure, and pressure causes medium liquid level rising in the pumping pipe, and pumping device is poorly sealed may to cause dielectric leakage.

2, sealing gasket might come off or lose.

In addition, also having a kind of sealing means that connects is on the basis of above-mentioned first kind or the second way, at pumping device top flange lid flexible pipe is set, and the other end of flexible pipe communicates with the liquid pipe, is used for the pressure of equilibrium liquid tank body gas-phase space and pumping pipe gas-phase space.Though this mode makes moderate progress to eliminating leakage hidden danger, and is limited to Korrosionsmedium such as concentrated sulphuric scid role, and flexible pipe working life and very short.

The model utility content

In order to solve existing technical problem in the background technique, the utility model proposes a kind of joint seal of flanges device, solved the technical problem of the poorly sealed possibility of flange connecting apparatus leakage in the background technique.

Technical solution of the present utility model is: the joint seal of flanges device, comprise flange seat and blind flange, it is characterized in that: described joint seal of flanges device, the flange seat inwall is provided with passage, the upper end of described passage is communicated with pumping pipe, and the lower end of described passage is communicated with tank body.

Above-mentioned passage is two, and symmetry is along the inwall setting of flange seat respectively.

Be provided with gland in the above-mentioned groove, leave between described gland and the passage and make the breach that gas communicates in passage and the flange seat.

Be provided with sealing gasket between above-mentioned gland and the blind flange groove, described gland closely is connected with sealing gasket by fastening piece.

Above-mentioned flange seat radially is vertically installed with lug, and described blind flange is provided with pin-and-hole, and described lug is connected with pin-and-hole.

Groove on the above-mentioned blind flange is a T-slot.

The utility model has the advantages that:

1) forms a passage at the flange seat inwall, the passage bottom communicates with the tank body gas-phase space, passage top communicates with the pumping pipe gas-phase space, gas-phase space pressure and pumping pipe gas-phase space pressure total energy keeps balance in the tank body so in the course of the work, and medium is unlikely to be extruded outside the pumping device by tank interior pressure.

2) sealing gasket is fixed in the blind flange groove by gland, and a T-slot is arranged on the blind flange, and gland is close to blind flange by fastening piece, can effectively avoid sealing gasket to come off.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation of blind flange in the utility model;

Fig. 3 is the C-C view of Fig. 2;

Fig. 4 is the B-B view of Fig. 2.

1-flange seat, 2-blind flange, 3-sealing gasket, 4-gland, 5-fastening piece, 6-clamping bolt, 12-pumping pipe, 13-lug, 14-passage 25-pin-and-hole, 26-handle, 27-T shape groove, 28-groove;

Embodiment

Referring to Fig. 1, Fig. 2, the joint seal of flanges device that the utility model proposes, comprise flange seat 1, blind flange 2, be provided with passage 14 at flange seat 1 inwall, passage 14 is two, respectively along the interior edge of flange seat 1, one end of passage 14 communicates with the tank body gas-phase space, the other end of passage 14 communicates with the pumping pipe gas-phase space, so in the course of the work, gas in the tank body flows to the pumping pipe gas-phase space by passage 14, and gas-phase space pressure and pumping pipe gas-phase space pressure total energy keeps balance in the tank body, and medium is unlikely to be extruded outside the pumping device by tank interior pressure.

The setting of in the utility model flange seat 1 internal channel adapts, sealing configuration between flange seat 1 and blind flange 2 has also been done corresponding adjustment, one side of flange seat 1 is provided with pivot hole, one end of blind flange 2 is connected with flange seat 1 by pivot hole, radially be vertically installed with lug 13 along flange seat 1, lug 13 is positioned at the outer of flange seat 1; T-slot 27 is set on the blind flange 2, fastening piece 5 is housed in the T-slot 27, gland 4 is close on the blind flange 2 by fastening piece 5, and sealing gasket 3 is fixed in the groove 28 of blind flange 2 by gland 4.The joint of pivot hole is " L " shape, is symmetrical arranged 4 pairs of lugs.Blind flange 2 is provided with handle 26, and handle 26 is an integral piece with blind flange 2.

In envelope during blind flange, the pin-and-hole 25 of blind flange 2 upper sheds with along the radially vertically disposed protruding 13 ears coupling of flange seat 1, fixing with clamping bolt 6; When opening the joint seal of flanges lid, unclamp clamping bolt 6, and open clamping bolt 6 along the opening of pin-and-hole 25, pulling handle 26, handle 26 and blind flange 2 around pivot hole along flange seat 1 radially Vertical direction rotate.

When flow container being carried out the drawing liquid operation, open blind flange 2, outside docking port is pressed in the upper end of flange seat 1, and an end that communicates with the pumping pipe gas-phase space of passage 14 is sealed, and the liquid in the tank car is extracted out by pumping pipe 12.

Claims

1. the joint seal of flanges device comprises flange seat and blind flange, it is characterized in that: described joint seal of flanges device, and the flange seat inwall is provided with passage, and the upper end of described passage is communicated with pumping pipe, and the lower end of described passage is communicated with tank body.

2. joint seal of flanges device according to claim 1 is characterized in that: described passage is two, and symmetry is along the inwall setting of flange seat respectively.

3. joint seal of flanges device according to claim 1 and 2,, it is characterized in that: described blind flange is provided with groove, is provided with gland in the described groove, leaves between described gland and the passage to make the breach that gas communicates in passage and the flange seat.

4. joint seal of flanges device according to claim 3,, it is characterized in that: be provided with sealing gasket between described gland and the blind flange groove, described gland closely is connected with sealing gasket by fastening piece.

5. joint seal of flanges device according to claim 4,, it is characterized in that: described flange seat radially is vertically installed with lug, and described blind flange is provided with pin-and-hole, and described lug is connected with pin-and-hole.

6. joint seal of flanges device according to claim 5,, it is characterized in that: the groove on the described blind flange is a T-slot.