CN210448408U - Filter for high-pressure hydrogen - Google Patents

Abstract

The utility model discloses a filter for high-pressure hydrogen, which comprises a filter body, wherein an air inlet, an air outlet and a filter opening are arranged in the filter body, two ends of the filter body are respectively provided with a clamping sleeve group connected with an external pipeline, the clamping sleeve group comprises a rear clamping sleeve and an elastic sealing assembly which are connected with each other, and a clamping sleeve nut sleeved outside the rear clamping sleeve and the elastic sealing assembly, the elastic sealing assembly comprises an elastic sealing body and a fixing ring, and the elastic sealing body is arranged on the fixing ring; be equipped with the filter core between air inlet and the gas outlet, filter core top side links to each other with the air inlet, and filter core bottom opening links to each other with the filter orifice, filter orifice side links to each other with the gas outlet, filter orifice bottom is equipped with the valve cap, the valve cap overcoat is equipped with the valve cap nut, is equipped with the spring between valve cap and the filter core. The utility model discloses the leakproofness is good, filter fineness is high, extensively be applicable to various high-pressure hydrogen and filter.

Description

Filter for high-pressure hydrogen

Technical Field

The utility model relates to a check valve technical field, in particular to filter for high pressure hydrogen.

Background

The filter is an indispensable device on the medium conveying pipeline, and the sealing performance of the filter needs to be ensured in the medium conveying process to prevent the conveying medium from leaking. At present, in order to ensure the sealing of the filter, a nitrile rubber sealing ring is usually arranged, and the sealing performance and the service life of the method need to be improved. Other methods of sealing the filter housing to the filter element are also currently used, and most of these methods require the addition of several additional components to the filter, with the more components within the filter, the higher the likelihood of problems during normal filter operation. The more components involved, the more time and skill required to replace the filter.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention aims to provide a filter for high pressure hydrogen gas, which has a simple structure, a good sealing performance and a long service life.

The technical scheme of the utility model as follows:

a filter for high-pressure hydrogen comprises a filter body, wherein an air inlet, an air outlet and a filtering port are formed in the filter body, clamping sleeve groups connected with an external pipeline are respectively arranged at two ends of the filter body, each clamping sleeve group comprises a rear clamping sleeve and an elastic sealing assembly which are connected with each other, and clamping sleeve nuts sleeved outside the rear clamping sleeve and the elastic sealing assembly, the elastic sealing assembly comprises an elastic sealing body and a fixing ring, and the elastic sealing body is arranged on the fixing ring; be equipped with the filter core between air inlet and the gas outlet, filter core top side links to each other with the air inlet, and filter core bottom opening links to each other with the filter orifice, filter orifice side links to each other with the gas outlet, filter orifice bottom is equipped with the valve cap, the valve cap overcoat is equipped with the valve cap nut, is equipped with the spring between valve cap and the filter core.

Preferably, the elastic sealing body is made of a silicon rubber material.

Preferably, the elastic sealing body is fixed to the fixing ring by vulcanization.

Preferably, the joint of the filter body and the clamping sleeve group is provided with an inner conical surface, the outer surface of the elastic sealing body is an outer conical surface which is matched with the shape of the inner conical surface at the joint and has a size larger than that of the inner conical surface at the joint, and the inner diameter of the elastic sealing body is smaller than the outer diameter of the external pipeline.

Preferably, a silicon rubber elastic sealing ring is arranged at the joint between the inner side wall of the end part of the filter body and the outer side wall of the valve cap.

Preferably, the bottom of the bonnet below the bottom of the bonnet nut is provided with a retaining ring.

Preferably, the top of the filter body is provided with a threaded hole.

Preferably, the filter element is made of 316 stainless steel powder through sintering.

Preferably, the filtering precision of the filter element is 7-15 μm.

The pressure of the high-pressure hydrogen is 1-35 MPa.

The utility model has the advantages that:

1. including back cutting ferrule and the elastic sealing assembly that links to each other through setting up the cutting ferrule group, and the cover is established the cutting ferrule nut outside back cutting ferrule and the elastic sealing assembly, the elastic sealing assembly includes elastic sealing body and solid fixed ring, the elastic sealing body sets up gu fixed ring is last, can make check valve and external pipeline form good sealed, plays through back cutting ferrule and promptly external pipeline and prevent that external pipeline from droing, seals and avoids the contact surface damage through the elastic sealing body, fixes elastic sealing body and prevents excessively to screw up the installation through the solid fixed ring.

2. When cutting ferrule group uses a period leakproofness to reduce, the accessible is changed cutting ferrule group, makes the utility model discloses can continue to use, change new through the renewal part, avoid the wasting of resources.

3. Through being equipped with the spring between valve cap and filter core, can compress tightly the filter core to and prevent that the valve cap nut is not hard up, prevent not hard up to lead to the filter core not hard up to lead to the filter effect to reduce.

4. Through all being equipped with interior conical surface at the joint department that the check valve body links to each other with cutting ferrule group, the joint department that the check valve joint body links to each other with cutting ferrule group, the elastic seal surface be with the outer conical surface of joint department interior conical surface shape phase-match and size greater than joint department interior conical surface size, the elastic seal internal diameter is less than external pipeline external diameter, can strengthen sealing performance and can avoid the contact surface damage.

5. The check ring is arranged at the bottom of the bonnet below the bottom of the bonnet nut, so that the bonnet can be prevented from loosening, and the locking effect is achieved.

6. Through set up the screw hole at the filter body top, can fix filter body, prevent to use the utility model discloses the time arouses external pipeline and filter to seal not tight and lead to leaking gas because of the filter is too heavy under the vibration condition.

7. The filter element is formed by sintering 316 stainless steel powder, the filtering precision is 7-15 mu m, hydrogen corrosion can be prevented, and the filtering effect is improved.

8. Through adopting high low temperature resistant, high pressure resistant, corrosion-resistant silicon rubber that is fit for the hydrogen use, and through vulcanizing fixed seal, no longer adopt ordinary nitrile rubber O type sealing washer, can prevent to drop because of the gas flow is fast when high pressure, increase life, reinforcing sealing performance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic top view of the high-pressure hydrogen filter according to the present invention;

FIG. 2 is a schematic front view of the high pressure hydrogen filter according to the present invention;

fig. 3 is a schematic structural view of the ferrule set when the ferrule nut of the high-pressure hydrogen filter of the present invention is not tightened;

fig. 4 is the utility model discloses the structure schematic diagram of clamping sleeve group when high pressure hydrogen is screwed up with filter card sleeve nut.

Reference numbers in the figures:

1-threaded hole, 2-filter body, 3-air inlet, 4-air outlet, 5-filter opening, 6-external pipeline, 7-rear ferrule, 8-elastic sealing assembly, 9-ferrule nut, 10-elastic sealing body, 11-fixing ring, 12-joint, 13-filter element, 14-valve cap, 15-valve cap nut, 16-check ring, 17-spring and 18-elastic sealing ring.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

As shown in fig. 1-4, a filter for high pressure hydrogen, includes filter body 2 with screw hole 1 at the top, be equipped with air inlet 3, gas outlet 4 and filtration mouth 5 in the filter body 2, filter body 2 both ends are equipped with the cutting ferrule group of being connected with external pipeline 6 respectively, the cutting ferrule group is including the back cutting ferrule 7 and the elastic seal assembly 8 that link to each other to and the cover is established the cutting ferrule nut 9 outside back cutting ferrule 7 and the elastic seal assembly 8, the elastic seal assembly 8 includes elastic seal body 10 and solid fixed ring 11, elastic seal body 10 adopts the preparation of silicon rubber material to form, and fixes through the vulcanization on solid fixed ring 11. The joint 12 that filter body 2 and cutting ferrule group link to each other is equipped with interior conical surface, the surface of elastic seal 10 is the outer conical surface that matches and the size is greater than 12 interior conical surface sizes of joint department with 12 interior conical surface shapes of joint department, and the internal diameter of elastic seal 10 is less than external pipeline 6 external diameters. Be equipped with between air inlet 3 and the gas outlet 4 and adopt 316 stainless steel powder sintering to form, strain the filter core 13 that the precision is 7-15 mu m, filter core 13 top side links to each other with air inlet 3, and filter core 13 bottom opening links to each other with filtration mouth 5, filtration mouth 5 side links to each other with gas outlet 4, filtration mouth 5 bottom is equipped with valve cap 14, valve cap 14 overcoat is equipped with valve cap nut 15, valve cap 14 bottom under valve cap nut 15 bottom is equipped with retaining ring 16, is equipped with spring 17 between valve cap 14 and the filter core 13, junction between 2 tip inside walls of filter body and the 14 lateral walls of valve cap is equipped with silicon rubber elastic seal 18. The pressure of the high-pressure hydrogen is 1-35 MPa.

In a specific embodiment, the air inlet 3 and the air outlet 4 are not in a straight line in the filter body 2, so that the pressure change of the air from the air inlet 3 to the air outlet 4 is increased, the air flow is increased, the short circuit and the pressure holding of the filter element 13 are avoided, and the utilization rate and the filtering effect of the filter element 13 are improved.

Use the utility model discloses the time, two external pipeline 6 are connected and are sealed through the cutting ferrule group at filter body 2 left and right sides both ends respectively, specifically for connecting external pipeline 6 after, screw up cutting ferrule nut 9, cutting ferrule 7 motion after driving during the motion of cutting ferrule nut 9, back cutting ferrule 7 produces a radial deformation at the front end under solid fixed ring 11 and cutting ferrule nut 9's effect, this deformation can lead to external pipeline 6 to produce a arch at 7 front ends of back cutting ferrule, simultaneously back cutting ferrule 7 can inwards cut into external pipeline 6, promptly external pipeline 6 prevents to drop. Because of the hole size of elasticity seal 10 is less than external pipeline 6, simultaneously the outer conical surface size of elasticity seal 10 is greater than 12 interior conical surface sizes of joint department, when back cutting ferrule 7 moves, also can make solid fixed ring 11 and elasticity seal 10 move together, make the inner hole wall of elasticity seal 10 tightly hug closely external pipeline 6 surface, the outer conical surface of elasticity seal 10 tightly pastes together with 12 interior conical surfaces of joint department, simultaneously under the internal pressure effect, elasticity seal 10 can all produce a pressure to axial and radial, make elasticity seal 10 more tightly be in the same place with external pipeline 6 surface and the 12 interior conical surface contacts of joint department, the reinforcing leakproofness. When gas flows in from the gas inlet 3 of the filter body 2, the gas flows into the filtering opening 5 after being filtered by the filter element 13, then flows into the gas outlet 4 through the filtering opening 5, and finally flows into the downstream through the external pipeline 6.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some modifications or equivalent embodiments without departing from the scope of the present invention, but all the technical matters of the present invention are within the scope of the present invention.

Claims (10)

1. A filter for high-pressure hydrogen is characterized by comprising a filter body, wherein an air inlet, an air outlet and a filtering port are arranged in the filter body, clamping sleeve groups connected with an external pipeline are respectively arranged at two ends of the filter body, each clamping sleeve group comprises a rear clamping sleeve and an elastic sealing assembly which are connected with each other, and clamping sleeve nuts sleeved outside the rear clamping sleeve and the elastic sealing assembly are arranged, the elastic sealing assembly comprises an elastic sealing body and a fixing ring, and the elastic sealing body is arranged on the fixing ring; be equipped with the filter core between air inlet and the gas outlet, filter core top side links to each other with the air inlet, and filter core bottom opening links to each other with the filter orifice, filter orifice side links to each other with the gas outlet, filter orifice bottom is equipped with the valve cap, the valve cap overcoat is equipped with the valve cap nut, is equipped with the spring between valve cap and the filter core.

2. The filter for high-pressure hydrogen gas according to claim 1, wherein the elastic sealing body is made of a silicone rubber material.

3. The filter for high-pressure hydrogen gas according to claim 2, wherein the elastic sealing body is fixed to the fixing ring by vulcanization.

4. The filter for high-pressure hydrogen gas according to claim 1, wherein the joint of the filter body and the ferrule group is provided with an inner conical surface, the outer surface of the elastic sealing body is an outer conical surface which is matched with the shape of the inner conical surface at the joint and has a size larger than that of the inner conical surface at the joint, and the inner diameter of the elastic sealing body is smaller than the outer diameter of the external pipeline.

5. A filter for high pressure hydrogen gas as claimed in claim 1, wherein a joint between the inner side wall of the end portion of the filter body and the outer side wall of the valve cap is provided with a silicone rubber elastic packing.

6. A filter for high pressure hydrogen gas as claimed in claim 1, wherein a retainer ring is provided at a bottom of the bonnet below a bottom of the bonnet nut.

7. A filter for high pressure hydrogen gas according to claim 1, wherein the filter body is provided with a screw hole at a top portion thereof.

8. A filter for high pressure hydrogen gas as claimed in any one of claims 1 to 7, wherein the filter element is sintered from 316 stainless steel powder.

9. A filter for high pressure hydrogen gas according to claim 8, wherein the filter element has a filtration accuracy of 7 to 15 μm.

10. A filter for high-pressure hydrogen gas according to any one of claims 1 to 7, wherein the pressure of the high-pressure hydrogen gas is 1 to 35 MPa.

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